Test 9 · ★★★ · Animals of North America and Britain: moose, bald eagles,…

What would happen if every beaver dam on a stream were removed?

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · What happens: happen, remove · To what, where: beaver dam

This is test 9 · ★★★ of lesson 80 «Animals of North America and Britain: moose, bald eagles, raccoons, beavers, foxes, badgers, hedgehogs, robins» 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	if	if	SCONJ	_	12 removed	mark
5	every	every	DET	PronType=Tot	7 dam	det
6	beaver	beaver	NOUN	Number=Sing	7 dam	compound
7	dam	dam	NOUN	Number=Sing	12 removed	nsubj:pass
8	on	on	ADP	_	10 stream	case
9	a	a	DET	Definite=Ind PronType=Art	10 stream	det
10	stream	stream	NOUN	Number=Sing	7 dam	nmod
11	were	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Past VerbForm=Fin	12 removed	aux:pass
12	removed	remove	VERB	Tense=Past VerbForm=Part Voice=Pass	3 happen	advcl
13	?	?	PUNCT	_	3 happen	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	happen	would							vn occur-48.3-1 «NP V»: agent=Theme
2	remove a condition, not said to happen	past · passive		every beaver dam on a stream					vn fire-10.10 «NP V NP»: subject=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.

The options

Option 1 · ← Mova's choice

The stream would make a bigger pond

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 stream	det
2	stream	stream	NOUN	Number=Sing	4 make	nsubj
3	would	would	AUX	VerbForm=Fin	4 make	aux
4	make	make	VERB	VerbForm=Inf	root	root
5	a	a	DET	Definite=Ind PronType=Art	7 pond	det
6	bigger	big	ADJ	Degree=Cmp	7 pond	amod
7	pond	pond	NOUN	Number=Sing	4 make	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	make	would	the stream	a bigger pond					vn build-26.1-1 «NP.asset V NP»: agent=Asset pond=Product

Option 2

More beavers would move in

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	More	more	ADJ	Degree=Cmp	2 beavers	amod
2	beavers	beaver	NOUN	Number=Plur	4 move	nsubj
3	would	would	AUX	VerbForm=Fin	4 move	aux
4	move	move	VERB	VerbForm=Inf	root	root
5	in	in	ADV	_	4 move	advmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	move in	would	More beavers						vn roll-51.3.1 «NP.theme V»: agent=Theme

Option 3 · ✓ the right answer

The pond would drain and the animals living there would lose their home

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 pond	det
2	pond	pond	NOUN	Number=Sing	4 drain	nsubj
3	would	would	AUX	VerbForm=Fin	4 drain	aux
4	drain	drain	VERB	VerbForm=Inf	root	root
5	and	and	CCONJ	_	11 lose	cc
6	the	the	DET	Definite=Def PronType=Art	7 animals	det
7	animals	animal	NOUN	Number=Plur	11 lose	nsubj
8	living	live	VERB	VerbForm=Ger	7 animals	acl
9	there	there	ADV	PronType=Dem	8 living	advmod
10	would	would	AUX	VerbForm=Fin	11 lose	aux
11	lose	lose	VERB	VerbForm=Inf	4 drain	conj
12	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	13 home	nmod:poss
13	home	home	NOUN	Number=Sing	11 lose	obj

#	verb	tense, mood	who	what, whom	where	roles by
1	drain	would	the pond			vn clear-10.3-1 «NP.Source V»: agent=Source
2	live	gerund	the animals not said here		there	vn exist-47.1-1 «NP V»: agent=Theme
3	lose	would	the animals	animals's home		vn succeed-74-3-1 «NP V NP»: agent=Agent home=Eventuality

Option 4

Nothing at all would change

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Nothing	nothing	PRON	Number=Sing PronType=Neg	5 change	nsubj
2	at	at	ADP	_	3 all	case
3	all	all	DET	PronType=Tot	1 Nothing	nmod
4	would	would	AUX	VerbForm=Fin	5 change	aux
5	change	change	VERB	VerbForm=Inf	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	change	would	Nothing						vn dress-41.1.1-1-1 «NP V»: agent=Agent

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.

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