---
title: What can a sewage works make from its leftover sludge? — Heating, water pipes and drains · tree and pragmatics
description: What can a sewage works make from its leftover sludge? Test 10 · ★★ of lesson 13 «Heating, water pipes and drains» of the technology 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 10 · ★★ · Heating, water pipes and drains

<!-- .ven lang=en -->
What can a sewage works make from its leftover sludge?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** sewage works · **What happens:** make · **To what, where:** leftover sludge

<!-- .vabout -->
This is test 10 · ★★ of lesson 13 «Heating, water pipes and drains» of the technology 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/technology/13-heating-water-pipes-and-drains/#t10).

## The question {#question}

```conllu
# sent_id = question:technology:13-heating-water-pipes-and-drains:t10:1
# text = What can a sewage works make from its leftover sludge?
1	What	what	PRON	WP	PronType=Int	6	obj	_	_
2	can	can	AUX	MD	VerbForm=Fin	6	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	sewage	sewage	NOUN	NN	Number=Sing	5	compound	_	_
5	works	work	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	make	make	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
7	from	from	ADP	IN	_	10	case	_	_
8	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
9	leftover	leftover	NOUN	NN	Number=Sing	10	compound	_	_
10	sludge	sludge	NOUN	NN	Number=Sing	6	obl	_	SpaceAfter=No
11	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | can | a sewage works |  |  | its leftover sludge |  |  | vn build-26.1-1 «NP.asset V PP»: agent=Asset what=Product from sludge=Material |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Drinking water for houses

```conllu
# sent_id = question:technology:13-heating-water-pipes-and-drains:t10:o1:1
# text = Drinking water for houses
1	Drinking	drink	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
2	water	water	NOUN	NN	Number=Sing	1	obj	_	_
3	for	for	ADP	IN	_	4	case	_	_
4	houses	house	NOUN	NNS	Number=Plur	1	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drink** | gerund |  | water |  |  |  | for houses | vn eat-39.1-1 «NP V NP»: agent=Agent water=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Paper for schools

```conllu
# sent_id = question:technology:13-heating-water-pipes-and-drains:t10:o2:1
# text = Paper for schools
1	Paper	paper	NOUN	NN	Number=Sing	0	root	_	_
2	for	for	ADP	IN	_	3	case	_	_
3	schools	school	NOUN	NNS	Number=Plur	1	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Salt for roads

```conllu
# sent_id = question:technology:13-heating-water-pipes-and-drains:t10:o3:1
# text = Salt for roads
1	Salt	salt	NOUN	NN	Number=Sing	0	root	_	_
2	for	for	ADP	IN	_	3	case	_	_
3	roads	road	NOUN	NNS	Number=Plur	1	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Gas for energy

```conllu
# sent_id = question:technology:13-heating-water-pipes-and-drains:t10:o4:1
# text = Gas for energy
1	Gas	gas	NOUN	NN	Number=Sing	0	root	_	_
2	for	for	ADP	IN	_	3	case	_	_
3	energy	energy	NOUN	NN	Number=Sing	1	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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: [Heating, water pipes and drains, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/technology/13-heating-water-pipes-and-drains/t9/)
- next →: [Heating, water pipes and drains, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/technology/13-heating-water-pipes-and-drains/t11/)
- ↑ back to [Heating, water pipes and drains](https://md.mova.elamur.ai/free/en/corpora/questions/technology/13-heating-water-pipes-and-drains/)