Test 9 · ★ · The reptile house: snakes

«snakes unhinge their jaws, the jaw just pops off» What is closer to the truth?

Mova's choice: option 1 · The right answer: option 3 · wrong ✗ · Who acts: snakes, jaw · What happens: unhinge, pop off, be · To what, where: jaws

This is test 9 · ★ of lesson 87 «The reptile house: snakes» 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	«	«	PUNCT	_	3 unhinge	punct
2	snakes	snake	NOUN	Number=Plur	3 unhinge	nsubj
3	unhinge	unhinge	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
4	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	5 jaws	nmod:poss
5	jaws	jaw	NOUN	Number=Plur	3 unhinge	obj
6	,	,	PUNCT	_	10 pops	punct
7	the	the	DET	Definite=Def PronType=Art	8 jaw	det
8	jaw	jaw	NOUN	Number=Sing	10 pops	nsubj
9	just	just	ADV	_	10 pops	advmod
10	pops	pop	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 unhinge	conj
11	off	off	ADP	_	10 pops	compound:prt
12	»	»	PUNCT	_	10 pops	punct
13	What	what	PRON	PronType=Int	15 closer	nsubj
14	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	15 closer	cop
15	closer	close	ADJ	Degree=Cmp	10 pops	advcl
16	to	to	ADP	_	18 truth	case
17	the	the	DET	Definite=Def PronType=Art	18 truth	det
18	truth	truth	NOUN	Number=Sing	15 closer	obl
19	?	?	PUNCT	_	3 unhinge	punct

#	verb	tense, mood	who	what, whom	other	roles by
1	unhinge in a quote	present	snakes	snakes's jaws		vn disassemble-23.3 «NP V NP»: agent=Agent jaw=Patient
2	pop off in a quote	present	the jaw			vn die-42.4 «NP V»: agent=Patient
3	is	present			to the truth; close property	tree rules

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

No, snakes always chew their food

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	No	no	INTJ	Polarity=Neg	5 chew	discourse
2	,	,	PUNCT	_	1 No	punct
3	snakes	snake	NOUN	Number=Plur	5 chew	nsubj
4	always	always	ADV	PronType=Tot	5 chew	advmod
5	chew	chew	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
6	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	7 food	nmod:poss
7	food	food	NOUN	Number=Sing	5 chew	obj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	chew	present	snakes	snakes's food				always property	vn chew-39.2 «NP V NP»: agent=Agent food=Patient

Option 2

Yes, but only for eggs

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Yes	yes	INTJ	Polarity=Pos	6 eggs	discourse
2	,	,	PUNCT	_	1 Yes	punct
3	but	but	CCONJ	_	6 eggs	cc
4	only	only	ADV	_	6 eggs	advmod
5	for	for	ADP	_	6 eggs	case
6	eggs	egg	NOUN	Number=Plur	root	root

The frames reader finds no event or fact in this sentence.

Option 3 · ✓ the right answer

The jaws are loose and stretchy rather than coming apart

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 jaws	det
2	jaws	jaw	NOUN	Number=Plur	4 loose	nsubj
3	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	4 loose	cop
4	loose	loose	ADJ	Degree=Pos	root	root
5	and	and	CCONJ	_	6 stretchy	cc
6	stretchy	stretchy	ADJ	Degree=Pos	4 loose	conj
7	rather	rather	ADV	ExtPos=CCONJ	9 coming	cc
8	than	than	ADP	_	7 rather	fixed
9	coming	come	VERB	Tense=Pres VerbForm=Part	4 loose	conj
10	apart	apart	ADV	_	9 coming	advmod

#	verb	tense, mood	who	other	roles by
1	is	present	the jaws	loose property	tree rules
2	be		the jaws not said here		tree rules
3	come apart	gerund	the jaws not said here	apart property	vn escape-51.1-1 «NP V»: agent=Theme

Option 4

Yes, the jaw falls right off after every meal and grows back

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Yes	yes	INTJ	Polarity=Pos	5 falls	discourse
2	,	,	PUNCT	_	1 Yes	punct
3	the	the	DET	Definite=Def PronType=Art	4 jaw	det
4	jaw	jaw	NOUN	Number=Sing	5 falls	nsubj
5	falls	fall	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
6	right	right	ADV	_	7 off	advmod
7	off	off	ADV	_	5 falls	advmod
8	after	after	ADP	_	10 meal	case
9	every	every	DET	PronType=Tot	10 meal	det
10	meal	meal	NOUN	Number=Sing	5 falls	obl
11	and	and	CCONJ	_	12 grows	cc
12	grows	grow	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	5 falls	conj
13	back	back	ADV	_	12 grows	advmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	fall	present	the jaw				after every meal	off property	vn occur-48.3 «NP V»: agent=Theme
2	grow back	present	the jaw not said here						vn appear-48.1.1 «NP V»: agent=Theme

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/87-reptile-house-snakes/t9/