---
title: "the pan's coating is so slippery, how come?" — Plastics: useful and stubborn · tree and pragmatics
description: "the pan's coating is so slippery, how come?" Test 9 of lesson 29 «Plastics: useful and stubborn» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 9 · Plastics: useful and stubborn

<!-- .ven lang=en -->
"the pan's coating is so slippery, how come?"

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** coating · **What happens:** be, come

<!-- .vabout -->
This is test 9 of lesson 29 «Plastics: useful and stubborn» of the chemistry 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](https://md.mova.elamur.ai/free/en/school-run/chemistry/29-plastics-useful-stubborn/#t9).

## The question {#question}

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t9:1
# text = "the pan's coating is so slippery, how come?"
1	"	"	PUNCT	``	_	8	punct	_	SpaceAfter=No
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	pan	pan	NOUN	NN	Number=Sing	5	nmod:poss	_	SpaceAfter=No
4	's	's	PART	POS	_	3	case	_	_
5	coating	coating	NOUN	NN	Number=Sing	8	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
7	so	so	ADV	RB	_	8	advmod	_	_
8	slippery	slippery	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
9	,	,	PUNCT	,	_	11	punct	_	_
10	how	how	ADV	WRB	PronType=Int	11	advmod	_	_
11	come	come	VERB	VB	VerbForm=Inf	8	parataxis	_	SpaceAfter=No
12	?	?	PUNCT	.	_	8	punct	_	SpaceAfter=No
13	"	"	PUNCT	''	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** *in a quote* | present | the pan's coating |  |  |  |  | slippery *property* | tree rules |
| 2 | **come** *in a quote* | infinitive |  |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |

<!-- .note -->
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 {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
It is magnetic and pushes food away

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t9:o1:1
# text = It is magnetic and pushes food away
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	magnetic	magnetic	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
6	food	food	NOUN	NN	Number=Sing	5	obj	_	_
7	away	away	ADV	RB	_	5	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | magnetic *property* | tree rules |
| 2 | **push away** | present |  | food |  |  |  | away *property* | vn carry-11.4-1-1 «NP V NP»: agent=Agent food=Theme |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
It is a plastic that food cannot grip

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t9:o2:1
# text = It is a plastic that food cannot grip
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	plastic	plastic	NOUN	NN	Number=Sing	0	root	_	_
5	that	that	PRON	WDT	PronType=Rel	9	obj	_	_
6	food	food	NOUN	NN	Number=Sing	9	nsubj	_	_
7	can	can	AUX	MD	VerbForm=Fin	9	aux	_	SpaceAfter=No
8	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
9	grip	grip	VERB	VB	VerbForm=Inf	4	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | a plastic |  |  |  |  | tree rules |
| 2 | **not** **grip** | can | food | a plastic |  |  |  |  | vn touch-20-1 «NP V NP»: agent=Agent that=Experiencer |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is covered in a thin coat of oil

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t9:o3:1
# text = It is covered in a thin coat of oil
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	covered	cover	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	in	in	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	thin	thin	ADJ	JJ	Degree=Pos	7	amod	_	_
7	coat	coat	NOUN	NN	Number=Sing	3	obl	_	_
8	of	of	ADP	IN	_	9	case	_	_
9	oil	oil	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cover** | present · passive |  | It |  |  |  | in a thin coat of oil | vn fill-9.8-1 «NP V NP PP.theme»: subject=Destination in coat=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is made of ice that never melts

```conllu
# sent_id = question:chemistry:29-plastics-useful-stubborn:t9:o4:1
# text = It is made of ice that never melts
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	ice	ice	NOUN	NN	Number=Sing	3	obl	_	_
6	that	that	PRON	WDT	PronType=Rel	8	nsubj	_	_
7	never	never	ADV	RB	PronType=Neg	8	advmod	_	_
8	melts	melt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | It |  |  |  | of ice | vn build-26.1-1 «NP.asset V NP»: subject=Product |
| 2 | **not** **melt** | present | ice |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

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**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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