---
title: Why is a school bag left on the stairs a problem? — Going up and down stairs safely · tree and pragmatics
description: Why is a school bag left on the stairs a problem? Test 4 of lesson 1 «Going up and down stairs safely» of the everyday 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 4 · Going up and down stairs safely

<!-- .ven lang=en -->
Why is a school bag left on the stairs a problem?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** school bag · **What happens:** be, leave · **To what, where:** school bag, problem, stairs

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This is test 4 of lesson 1 «Going up and down stairs safely» of the everyday 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/everyday/1-stairs/#t4).

## The question {#question}

```conllu
# sent_id = question:everyday:1-stairs:t4:1
# text = Why is a school bag left on the stairs a problem?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	school	school	NOUN	NN	Number=Sing	5	compound	_	_
5	bag	bag	NOUN	NN	Number=Sing	0	root	_	_
6	left	leave	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	acl	_	_
7	on	on	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	stairs	stair	NOUN	NNS	Number=Plur	6	obl	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	problem	problem	NOUN	NN	Number=Sing	6	obl	_	SpaceAfter=No
12	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present |  | a school bag |  |  |  |  | tree rules |
| 2 | **leave** | participle | a school bag *not said here* | a problem |  | the stairs |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent on stair=Location |

<!-- .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 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Someone can trip over it and fall

```conllu
# sent_id = question:everyday:1-stairs:t4:o1:1
# text = Someone can trip over it and fall
1	Someone	someone	PRON	NN	Number=Sing|PronType=Ind	3	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	_	_
3	trip	trip	VERB	VB	VerbForm=Inf	0	root	_	_
4	over	over	ADP	IN	_	5	case	_	_
5	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obl	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	fall	fall	VERB	VB	VerbForm=Inf	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **trip** | can | Someone |  |  | it |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme over it=Trajectory |
| 2 | **fall** | infinitive | Someone *not said here* |  |  |  |  |  | vn occur-48.3 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
It makes the stairs weaker

```conllu
# sent_id = question:everyday:1-stairs:t4:o2:1
# text = It makes the stairs weaker
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	stairs	stair	NOUN	NNS	Number=Plur	2	obj	_	_
5	weaker	weak	ADJ	JJR	Degree=Cmp	2	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | It | the stairs |  |  |  | weak *property* | vn build-26.1-1 «NP.material V NP»: agent=Material stair=Product |

### Option 3 {#o3}

<!-- .ven lang=en -->
It makes the stairs dirty and muddy for everyone

```conllu
# sent_id = question:everyday:1-stairs:t4:o3:1
# text = It makes the stairs dirty and muddy for everyone
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	stairs	stair	NOUN	NNS	Number=Plur	2	obj	_	_
5	dirty	dirty	ADJ	JJ	Degree=Pos	2	xcomp	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	muddy	muddy	ADJ	JJ	Degree=Pos	5	conj	_	_
8	for	for	ADP	IN	_	9	case	_	_
9	everyone	everyone	PRON	NN	Number=Sing|PronType=Tot	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | It | the stairs |  |  |  | dirty *property* | vn build-26.1-1 «NP.material V NP»: agent=Material stair=Product |

### Option 4 {#o4}

<!-- .ven lang=en -->
It blocks the light

```conllu
# sent_id = question:everyday:1-stairs:t4:o4:1
# text = It blocks the light
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	blocks	block	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	light	light	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **block** | present | It | the light |  |  |  |  | vn forbid-64.4-1 «NP V NP»: agent=Causer light=Theme |

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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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- ← previous: [Going up and down stairs safely, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/1-stairs/t3/)
- next →: [Going up and down stairs safely, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/1-stairs/t5/)
- ↑ back to [Going up and down stairs safely](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/1-stairs/)