---
title: Ascertain the principal source of the odour of kit retained unwashed… — Changing-room germs · tree and pragmatics
description: Ascertain the principal source of the odour of kit retained unwashed for several days. Exam question 3 of lesson 59 «Changing-room germs» of the medicine 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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# Exam question 3 · Changing-room germs

<!-- .ven lang=en -->
Ascertain the principal source of the odour of kit retained unwashed for several days.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** ascertain, retain · **To what, where:** principal source

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This is exam question 3 of lesson 59 «Changing-room germs» of the medicine course of Mova's primary school, asked in stiff, formal language. 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/medicine/59-changing-room-germs/#e3).

## The question {#question}

```conllu
# sent_id = question:medicine:59-changing-room-germs:e3:1
# text = Ascertain the principal source of the odour of kit retained unwashed for several days.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	source	source	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	odour	odour	NOUN	NN	Number=Sing	4	nmod	_	_
8	of	of	ADP	IN	_	11	case	_	_
9	kit	kit	NOUN	NN	Number=Sing	11	compound	_	_
10	retained	retain	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	amod	_	_
11	unwashed	unwashed	NOUN	NN	Number=Sing	7	nmod	_	_
12	for	for	ADP	IN	_	14	case	_	_
13	several	several	ADJ	JJ	Degree=Pos	14	amod	_	_
14	days	day	NOUN	NNS	Number=Plur	11	nmod	_	SpaceAfter=No
15	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the principal source of the odour of kit retained unwashed for several days |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent source=Topic |
| 2 | **retain** | participle |  |  |  |  |  |  | tree rules |

<!-- .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 -->
The fabric of the bag, which decays over time

```conllu
# sent_id = question:medicine:59-changing-room-germs:e3:o1:1
# text = The fabric of the bag, which decays over time
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	fabric	fabric	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	bag	bag	NOUN	NN	Number=Sing	2	nmod	_	SpaceAfter=No
6	,	,	PUNCT	,	_	8	punct	_	_
7	which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
8	decays	decay	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	acl:relcl	_	_
9	over	over	ADP	IN	_	10	case	_	_
10	time	time	NOUN	NN	Number=Sing	8	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **decay** | present | the fabric of the bag |  |  |  | time |  | vn entity\_specific\_cos-45.5 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Excessive washing of the garments

```conllu
# sent_id = question:medicine:59-changing-room-germs:e3:o2:1
# text = Excessive washing of the garments
1	Excessive	excessive	ADJ	JJ	Degree=Pos	2	amod	_	_
2	washing	washing	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	garments	garment	NOUN	NNS	Number=Plur	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **wash** |  |  | the garments |  |  |  |  | nom washing «act transitive»: of=patient |

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

<!-- .ven lang=en -->
Bacteria feeding upon perspiration

```conllu
# sent_id = question:medicine:59-changing-room-germs:e3:o3:1
# text = Bacteria feeding upon perspiration
1	Bacteria	bacterium	NOUN	NNS	Number=Plur	0	root	_	_
2	feeding	feed	VERB	VBG	VerbForm=Ger	1	acl	_	_
3	upon	upon	ADP	IN	_	4	case	_	_
4	perspiration	perspiration	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **feed** | gerund | Bacteria *not said here* |  |  |  |  | upon perspiration | vn gorge-39.6 «NP V PP.patient»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
Perspiration in its fresh state

```conllu
# sent_id = question:medicine:59-changing-room-germs:e3:o4:1
# text = Perspiration in its fresh state
1	Perspiration	perspiration	NOUN	NN	Number=Sing	0	root	_	_
2	in	in	ADP	IN	_	5	case	_	_
3	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
4	fresh	fresh	ADJ	JJ	Degree=Pos	5	amod	_	_
5	state	state	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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- next →: [Changing-room germs, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/59-changing-room-germs/e4/)
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