---
title: At a sewage works, waste water is screened, settled in tanks and cle… — Heating, water pipes and drains · tree and pragmatics
description: At a sewage works, waste water is screened, settled in tanks and cleaned by helpful bacteria before the clean water goes back to rivers, and the sludge can be turned into gas for energy. Who acts: clean water. A sentence of the lesson «Heating, water pipes and drains» of the technology course of Mov
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/15/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Heating, water pipes and drains](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/) / 15

# Heating, water pipes and drains, sentence 15

<!-- .ven lang=en -->
At a sewage works, waste water is screened, settled in tanks and cleaned by helpful bacteria before the clean water goes back to rivers, and the sludge can be turned into gas for energy.

<!-- .vintro -->
**Who acts:** clean water · **What happens:** screen, settle, clean, go back, turn · **To what, where:** waste water, sewage works, tanks, sludge, gas

<!-- .vabout -->
This is a sentence of the lesson «Heating, water pipes and drains» of the technology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (clean water), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:013-heating-water-pipes-and-drains.lesson:15
# text = At a sewage works, waste water is screened, settled in tanks and cleaned by helpful bacteria before the clean water goes back to rivers, and the sludge can be turned into gas for energy.
# source = school lesson (ours)
# course = technology
# lesson = 013-heating-water-pipes-and-drains.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R8-pos-agree ×1
1	At	at	ADP	IN	_	4	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	Agree=R5-strong|Haiku=3:det
3	sewage	sewage	NOUN	NN	Number=Sing	4	compound	_	_
4	works	work	NOUN	NNS	Number=Plur	9	obl	_	Agree=R8-pos-agree|Haiku=9:obl|HaikuPos=NOUN:NN:Number=Sing
5	,	,	PUNCT	,	_	9	punct	_	_
6	waste	waste	NOUN	NN	Number=Sing	7	compound	_	_
7	water	water	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	screened	screen	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
10	,	,	PUNCT	,	_	11	punct	_	_
11	settled	settle	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	conj	_	_
12	in	in	ADP	IN	_	13	case	_	_
13	tanks	tank	NOUN	NNS	Number=Plur	11	obl	_	_
14	and	and	CCONJ	CC	_	15	cc	_	_
15	cleaned	clean	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	conj	_	_
16	by	by	ADP	IN	_	18	case	_	_
17	helpful	helpful	ADJ	JJ	Degree=Pos	18	amod	_	_
18	bacteria	bacteria	NOUN	NN	Number=Sing	15	obl:agent	_	_
19	before	before	SCONJ	IN	_	23	mark	_	_
20	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
21	clean	clean	ADJ	JJ	Degree=Pos	22	amod	_	_
22	water	water	NOUN	NN	Number=Sing	23	nsubj	_	_
23	goes	go	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	advcl	_	_
24	back	back	ADV	RB	_	23	advmod	_	_
25	to	to	ADP	IN	_	26	case	_	_
26	rivers	river	NOUN	NNS	Number=Plur	23	obl	_	_
27	,	,	PUNCT	,	_	33	punct	_	_
28	and	and	CCONJ	CC	_	33	cc	_	_
29	the	the	DET	DT	Definite=Def|PronType=Art	30	det	_	_
30	sludge	sludge	NOUN	NN	Number=Sing	33	nsubj	_	_
31	can	can	AUX	MD	VerbForm=Fin	33	aux	_	_
32	be	be	AUX	VB	VerbForm=Inf	33	aux:pass	_	_
33	turned	turn	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	conj	_	_
34	into	into	ADP	IN	_	35	case	_	_
35	gas	gas	NOUN	NN	Number=Sing	33	obl	_	_
36	for	for	ADP	IN	_	37	case	_	_
37	energy	energy	NOUN	NN	Number=Sing	35	nmod	_	_
38	.	.	PUNCT	.	_	9	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **screen** | present · passive |  | waste water |  | a sewage works |  |  | vn concealment-16 «NP V NP PP.location»: subject=Patient at work=Location |
| 2 | **settle** | participle |  |  |  | tanks |  |  | vn odge-46-1 «NP V PP.location»: agent=Theme in tank=Location |
| 3 | **clean** | participle |  |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 4 | **go back** | present | the clean water |  |  |  |  | to rivers *result* | vn convert-26.6.2 «NP V S\_ING»: agent=Patient to river=Result |
| 5 | **turn** | can · passive |  | the sludge |  | gas for energy |  |  | vn roll-51.3.1 «NP V NP PP.trajectory»: subject=Theme into gas=Trajectory |

<!-- .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.

<!-- div src -->

**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:technology:013-heating-water-pipes-and-drains.lesson:15`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R8-pos-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

<!-- pn -->
- ← previous: [Heating, water pipes and drains, 14](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/14/)
- next →: [Heating, water pipes and drains, 16](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/16/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/)

