Test 9 · Animal builders: spiders' webs and silk

Why is spider silk useful to the spider in a sticky web and a stretchy line both?

Mova's choice: option 3 · The right answer: option 3 · right ✓ · Who acts: spider silk · What happens: be

This is test 9 of lesson 244 «Animal builders: spiders' webs and silk» 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	Why	why	ADV	PronType=Int	5 useful	advmod
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	5 useful	cop
3	spider	spider	NOUN	Number=Sing	4 silk	compound
4	silk	silk	NOUN	Number=Sing	5 useful	nsubj
5	useful	useful	ADJ	Degree=Pos	root	root
6	to	to	ADP	_	8 spider	case
7	the	the	DET	Definite=Def PronType=Art	8 spider	det
8	spider	spider	NOUN	Number=Sing	5 useful	obl
9	in	in	ADP	_	12 web	case
10	a	a	DET	Definite=Ind PronType=Art	12 web	det
11	sticky	sticky	ADJ	Degree=Pos	12 web	amod
12	web	web	NOUN	Number=Sing	8 spider	nmod
13	and	and	CCONJ	_	16 line	cc
14	a	a	DET	Definite=Ind PronType=Art	16 line	det
15	stretchy	stretchy	ADJ	Degree=Pos	16 line	amod
16	line	line	NOUN	Number=Sing	8 spider	conj
17	both	both	DET	PronType=Tot	8 spider	nmod
18	?	?	PUNCT	_	5 useful	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	spider silk					to the spider in a sticky web both and a stretchy line; useful 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

Silk changes by itself with the weather

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Silk	silk	NOUN	Number=Sing	2 changes	nsubj
2	changes	change	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	by	by	ADP	_	4 itself	case
4	itself	itself	PRON	Case=Acc Gender=Neut Number=Sing Person=3 PronType=Prs Reflex=Yes	2 changes	obl
5	with	with	ADP	_	7 weather	case
6	the	the	DET	Definite=Def PronType=Art	7 weather	det
7	weather	weather	NOUN	Number=Sing	2 changes	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	change	present	Silk					by Silk; with the weather	vn dress-41.1.1-1-1 «NP V»: agent=Agent

Option 2

All silk is exactly the same

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	All	all	DET	PronType=Tot	2 silk	det
2	silk	silk	NOUN	Number=Sing	6 same	nsubj
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 same	cop
4	exactly	exactly	ADV	_	6 same	advmod
5	the	the	DET	Definite=Def PronType=Art	6 same	det
6	same	same	ADJ	Degree=Pos	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	all silk					exactly, same property	tree rules

Option 3 · ← Mova's choice · ✓ the right answer

The spider makes different kinds of silk for different jobs

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 spider	det
2	spider	spider	NOUN	Number=Sing	3 makes	nsubj
3	makes	make	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	different	different	ADJ	Degree=Pos	5 kinds	amod
5	kinds	kind	NOUN	Number=Plur	3 makes	obj
6	of	of	ADP	_	7 silk	case
7	silk	silk	NOUN	Number=Sing	5 kinds	nmod
8	for	for	ADP	_	10 jobs	case
9	different	different	ADJ	Degree=Pos	10 jobs	amod
10	jobs	job	NOUN	Number=Plur	3 makes	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	make	present	the spider	different kinds of silk				for different jobs	vn build-26.1-1 «NP V NP P.asset»: agent=Agent kind=Product for job=Asset

Option 4

The spider buys silk from other spiders

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 spider	det
2	spider	spider	NOUN	Number=Sing	3 buys	nsubj
3	buys	buy	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	silk	silk	NOUN	Number=Sing	3 buys	obj
5	from	from	ADP	_	7 spiders	case
6	other	other	ADJ	Degree=Pos	7 spiders	amod
7	spiders	spider	NOUN	Number=Plur	3 buys	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	buy	present	the spider	silk		other spiders			vn get-13.5.1 «NP V NP PP.source»: agent=Agent silk=Theme from spider=Source

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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