Test 3 · ★★★ · Deep time and the story of life
A rock has half its radioactive atoms left after one half-life. After a second half-life, how much is left?
Mova's choice: option 1 · The right answer: option 1 · right ✓ · Who acts: rock · What happens: have, leave · To what, where: radioactive atoms, second half life
This is test 3 · ★★★ of lesson 58 «Deep time and the story of life» of the geography 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
Sentence 1: A rock has half its radioactive atoms left after one half-life.
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | A | a | DET | Definite=Ind PronType=Art | 2 rock | det |
| 2 | rock | rock | NOUN | Number=Sing | 3 has | nsubj |
| 3 | has | have | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 4 | half | half | DET | NumForm=Word NumType=Frac PronType=Ind | 7 atoms | det:predet |
| 5 | its | its | PRON | Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs | 7 atoms | nmod:poss |
| 6 | radioactive | radioactive | ADJ | Degree=Pos | 7 atoms | amod |
| 7 | atoms | atom | NOUN | Number=Plur | 3 has | obj |
| 8 | left | leave | VERB | Tense=Past VerbForm=Part Voice=Pass | 7 atoms | acl |
| 9 | after | after | ADP | _ | 13 life | case |
| 10 | one | one | NUM | NumForm=Word NumType=Card | 13 life | nummod |
| 11 | half | half | NOUN | Number=Sing NumForm=Word NumType=Frac | 13 life | compound |
| 12 | - | - | PUNCT | _ | 11 half | punct |
| 13 | life | life | NOUN | Number=Sing | 8 left | obl |
| 14 | . | . | PUNCT | _ | 3 has | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | have | present | a rock | rock's radioactive atoms | vn birth-28.2-1 «NP V NP»: agent=Agent atom=Patient | ||||
| 2 | leave | participle | rock's radioactive atoms not said here | after one half life | vn escape-51.1-1-1 «NP V»: agent=Theme |
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.
Sentence 2: After a second half-life, how much is left?
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | After | after | ADP | _ | 6 life | case |
| 2 | a | a | DET | Definite=Ind PronType=Art | 6 life | det |
| 3 | second | second | ADJ | Degree=Pos NumForm=Word NumType=Ord | 6 life | amod |
| 4 | half | half | NOUN | Number=Sing NumForm=Word NumType=Frac | 6 life | compound |
| 5 | - | - | PUNCT | _ | 4 half | punct |
| 6 | life | life | NOUN | Number=Sing | 11 left | nsubj:pass |
| 7 | , | , | PUNCT | _ | 9 much | punct |
| 8 | how | how | ADV | PronType=Int | 9 much | advmod |
| 9 | much | much | ADJ | Degree=Pos | 6 life | amod |
| 10 | is | be | AUX | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 11 left | aux:pass |
| 11 | left | leave | VERB | Tense=Past VerbForm=Part Voice=Pass | root | root |
| 12 | ? | ? | PUNCT | _ | 11 left | punct |
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | leave | present · passive | a second half life | vn keep-15.2 «NP V NP»: subject=Theme |
The options
Option 1 · ← Mova's choice · ✓ the right answer
A quarter
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | A | a | DET | Definite=Ind PronType=Art | 2 quarter | det |
| 2 | quarter | quarter | NOUN | Number=Sing | root | root |
The frames reader finds no event or fact in this sentence.
Option 2
Half, still
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Half | half | NOUN | Number=Sing NumForm=Word NumType=Frac | root | root |
| 2 | , | , | PUNCT | _ | 1 Half | punct |
| 3 | still | still | ADV | _ | 1 Half | advmod |
The frames reader finds no event or fact in this sentence.
Option 3
Nothing at all
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Nothing | nothing | PRON | Number=Sing PronType=Neg | root | root |
| 2 | at | at | ADP | _ | 3 all | case |
| 3 | all | all | DET | PronType=Tot | 1 Nothing | nmod |
The frames reader finds no event or fact in this sentence.
Option 4
Three quarters
The words, one row each (CoNLL-U)
| # | word | lemma | UPOS | features | head | relation |
|---|---|---|---|---|---|---|
| 1 | Three | three | NUM | NumForm=Word NumType=Card | 2 quarters | nummod |
| 2 | quarters | quarter | NOUN | Number=Plur | root | root |
The frames reader finds no event or fact in this sentence.
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/geography/58-deep-time-and-the-story-of-life/t3/