Test 6 · Myth check: do ostriches bury their heads in the sand?
What would happen to an ostrich that really kept its head under sand for a long time?
Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · What happens: happen, keep · To what, where: ostrich, sand
This is test 6 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: the test at school.
The question
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | What | what | PRON | PronType=Int | 3 happen | nsubj |
| 2 | would | would | AUX | VerbForm=Fin | 3 happen | aux |
| 3 | happen | happen | VERB | VerbForm=Inf | root | root |
| 4 | to | to | ADP | _ | 6 ostrich | case |
| 5 | an | a | DET | Definite=Ind PronType=Art | 6 ostrich | det |
| 6 | ostrich | ostrich | NOUN | Number=Sing | 3 happen | obl |
| 7 | that | that | PRON | PronType=Rel | 9 kept | obj |
| 8 | really | really | ADV | _ | 9 kept | advmod |
| 9 | kept | keep | VERB | Mood=Ind Number=Plur Person=3 Tense=Past VerbForm=Fin | 6 ostrich | acl:relcl |
| 10 | its | its | PRON | Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs | 11 head | nmod:poss |
| 11 | head | head | NOUN | Number=Sing | 9 kept | obj |
| 12 | under | under | ADP | _ | 13 sand | case |
| 13 | sand | sand | NOUN | Number=Sing | 9 kept | obl |
| 14 | for | for | ADP | _ | 17 time | case |
| 15 | a | a | DET | Definite=Ind PronType=Art | 17 time | det |
| 16 | long | long | ADJ | Degree=Pos | 17 time | amod |
| 17 | time | time | NOUN | Number=Sing | 9 kept | obl |
| 18 | ? | ? | PUNCT | _ | 3 happen | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | happen | would | to a ostrich | vn occur-48.3-1 «NP V»: agent=Theme | |||||
| 2 | keep | past | a ostrich | sand | time | vn sustain-55.6-1 «NP V NP ADJ»: agent=Agent that=Theme head=Attribute |
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.
The options
Option 1 · ← Mova's choice
It would hear lions better
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | It | it | PRON | Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs | 3 hear | nsubj |
| 2 | would | would | AUX | VerbForm=Fin | 3 hear | aux |
| 3 | hear | hear | VERB | VerbForm=Inf | root | root |
| 4 | lions | lion | NOUN | Number=Plur | 3 hear | obj |
| 5 | better | well | ADV | Degree=Cmp | 3 hear | advmod |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | hear | would | It | lions | well property | vn see-30.1-1-1 «NP V S»: agent=Experiencer lion=Stimulus |
Option 2
Nothing, it can breathe sand
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Nothing | nothing | PRON | Number=Sing PronType=Neg | root | root |
| 2 | , | , | PUNCT | _ | 1 Nothing | punct |
| 3 | it | it | PRON | Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs | 5 breathe | nsubj |
| 4 | can | can | AUX | VerbForm=Fin | 5 breathe | aux |
| 5 | breathe | breathe | VERB | VerbForm=Inf | 1 Nothing | acl:relcl |
| 6 | sand | sand | NOUN | Number=Sing | 5 breathe | obj |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | breathe | can | it | sand | vn breathe-40.1.2-1 «NP V NP»: agent=Agent sand=Theme |
Option 3 · ✓ the right answer
It would run out of air
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | It | it | PRON | Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs | 3 run | nsubj |
| 2 | would | would | AUX | VerbForm=Fin | 3 run | aux |
| 3 | run | run | VERB | VerbForm=Inf | root | root |
| 4 | out | out | ADP | _ | 6 air | case |
| 5 | of | of | ADP | _ | 6 air | case |
| 6 | air | air | NOUN | Number=Sing | 3 run | obl |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | run | would | It | air | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme out air=Trajectory |
Option 4
It would cool down nicely
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | It | it | PRON | Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs | 3 cool | nsubj |
| 2 | would | would | AUX | VerbForm=Fin | 3 cool | aux |
| 3 | cool | cool | VERB | VerbForm=Inf | root | root |
| 4 | down | down | ADP | _ | 3 cool | compound:prt |
| 5 | nicely | nicely | ADV | _ | 3 cool | advmod |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | cool down | would | It | nicely property | vn other_cos-45.4 «NP.patient V»: agent=Patient |
Text: the tests of Mova's primary school, written for Mova (world/data/school/), as the course runner gave them to the student. Trees: Mova's own parse — the en model on the CPU, when the site is built — not checked by a teacher; they may be wrong. Frames: Mova's frames reader (prag), each text read on its own. Elamur Cosmic License.
This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/t6/