---
title: A school replaces 100 old bulbs with LED bulbs. What happens? — Saving water and energy at home · tree and pragmatics
description: A school replaces 100 old bulbs with LED bulbs. What happens? Test 9 · ★ of lesson 89 «Saving water and energy at home» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 9 · ★ · Saving water and energy at home

<!-- .ven lang=en -->
A school replaces 100 old bulbs with LED bulbs. What happens?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** school · **What happens:** replace, happen · **To what, where:** 100 old bulbs

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This is test 9 · ★ of lesson 89 «Saving water and energy at home» of the world 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/world/89-saving-water-and-energy/#t9).

## The question {#question}

<!-- .note -->
*Sentence 1:* A school replaces 100 old bulbs with LED bulbs.

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:1
# text = A school replaces 100 old bulbs with LED bulbs.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	school	school	NOUN	NN	Number=Sing	3	nsubj	_	_
3	replaces	replace	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	100	100	NUM	CD	NumForm=Digit|NumType=Card	6	nummod	_	_
5	old	old	ADJ	JJ	Degree=Pos	6	amod	_	_
6	bulbs	bulb	NOUN	NNS	Number=Plur	3	obj	_	_
7	with	with	ADP	IN	_	9	case	_	_
8	LED	led	NOUN	NN	Number=Sing	9	compound	_	_
9	bulbs	bulb	NOUN	NNS	Number=Plur	6	nmod	_	SpaceAfter=No
10	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **replace** | present | a school | 100 old bulbs |  |  |  | with LED bulbs | vn substitute-13.6.2-1 «NP V NP PP.co-theme»: agent=Theme bulb=Location with bulb=Co-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.

<!-- .note -->
*Sentence 2:* What happens?

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:2
# text = What happens?
1	What	what	PRON	WP	PronType=Int	2	nsubj	_	_
2	happens	happen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	SpaceAfter=No
3	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The rooms stay as bright but more electricity is used

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:o1:1
# text = The rooms stay as bright but more electricity is used
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	rooms	room	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	stay	stay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	as	as	ADP	IN	_	5	case	_	_
5	bright	bright	ADJ	JJ	Degree=Pos	3	obl	_	_
6	but	but	CCONJ	CC	_	10	cc	_	_
7	more	more	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	electricity	electricity	NOUN	NN	Number=Sing	10	nsubj:pass	_	_
9	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	aux:pass	_	_
10	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stay** | present | the rooms |  |  |  |  | as bright | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **use** | present · passive |  | more electricity |  |  |  |  | vn eat-39.1 «NP V NP»: subject=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
The bulbs stop needing electricity

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:o2:1
# text = The bulbs stop needing electricity
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	bulbs	bulb	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	stop	stop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	needing	need	VERB	VBG	VerbForm=Ger	3	xcomp	_	_
5	electricity	electricity	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | present | the bulbs |  |  |  |  |  | vn stop-55.4-1-1 «NP V S\_ING»: agent=Affector clause=Eventuality |
| 2 | **need** | gerund | the bulbs *not said here* | electricity |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot electricity=Theme |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The rooms stay as bright but less electricity is used

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:o3:1
# text = The rooms stay as bright but less electricity is used
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	rooms	room	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	stay	stay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	as	as	ADP	IN	_	5	case	_	_
5	bright	bright	ADJ	JJ	Degree=Pos	3	obl	_	_
6	but	but	CCONJ	CC	_	10	cc	_	_
7	less	less	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	electricity	electricity	NOUN	NN	Number=Sing	10	nsubj:pass	_	_
9	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	aux:pass	_	_
10	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stay** | present | the rooms |  |  |  |  | as bright | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **use** | present · passive |  | less electricity |  |  |  |  | vn eat-39.1 «NP V NP»: subject=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The rooms get darker and less electricity is used

```conllu
# sent_id = question:world:89-saving-water-and-energy:t9:o4:1
# text = The rooms get darker and less electricity is used
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	rooms	room	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	get	get	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	darker	dark	ADJ	JJR	Degree=Cmp	3	xcomp	_	_
5	and	and	CCONJ	CC	_	9	cc	_	_
6	less	less	ADJ	JJR	Degree=Cmp	7	amod	_	_
7	electricity	electricity	NOUN	NN	Number=Sing	9	nsubj:pass	_	_
8	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	aux:pass	_	_
9	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present | the rooms |  |  |  |  | dark *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |
| 2 | **use** | present · passive |  | less electricity |  |  |  |  | vn eat-39.1 «NP V NP»: subject=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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