---
title: To guess what happens when one living thing disappears, follow the a… — Balance in a food web · tree and pragmatics
description: To guess what happens when one living thing disappears, follow the arrows: what it ate will grow in number, what ate it will go hungry and must switch food, shrink or move away. Who acts: one living thing, thing, number. A sentence of the lesson «Balance in a food web» of the world course of Mova's 
---

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# Balance in a food web, sentence 4

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To guess what happens when one living thing disappears, follow the arrows: what it ate will grow in number, what ate it will go hungry and must switch food, shrink or move away.

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**Who acts:** one living thing, thing, number · **What happens:** guess, happen, disappear, follow, eat, grow · **To what, where:** arrows, number, thing, food · **Speech:** someone speaks here

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This is a sentence of the lesson «Balance in a food web» of the world 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 (one living thing, thing, number), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:030-balance-in-food-webs.lesson:4
# text = To guess what happens when one living thing disappears, follow the arrows: what it ate will grow in number, what ate it will go hungry and must switch food, shrink or move away.
# source = school lesson (ours)
# course = world
# lesson = 030-balance-in-food-webs.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): R3-conj-first ×1, R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×2
1	To	to	PART	TO	_	2	mark	_	_
2	guess	guess	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	what	what	PRON	WP	PronType=Int	4	nsubj	_	_
4	happens	happen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
5	when	when	ADV	WRB	PronType=Int	9	advmod	_	_
6	one	one	NUM	CD	NumForm=Word|NumType=Card	8	nummod	_	Agree=R5-strong|Haiku=9:nsubj
7	living	living	NOUN	NN	Number=Sing	8	compound	_	Agree=R5-strong|Haiku=6:acl|HaikuPos=VERB:VBG:VerbForm=Ger
8	thing	thing	NOUN	NN	Number=Sing	9	nsubj	_	Agree=R5-strong|Haiku=7:obj
9	disappears	disappear	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	Agree=R7-rel-agree|Haiku=4:conj
10	,	,	PUNCT	,	_	11	punct	_	_
11	follow	follow	VERB	VB	Mood=Imp|VerbForm=Fin	2	conj	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	arrows	arrow	NOUN	NNS	Number=Plur	11	obj	_	_
14	:	:	PUNCT	:	_	17	punct	_	_
15	what	what	PRON	WP	PronType=Int	17	obj	_	_
16	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	17	nsubj	_	_
17	ate	eat	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	13	acl:relcl	_	_
18	will	will	AUX	MD	VerbForm=Fin	19	aux	_	_
19	grow	grow	VERB	VB	VerbForm=Inf	11	parataxis	_	Agree=R7-rel-agree|Haiku=11:ccomp
20	in	in	ADP	IN	_	21	case	_	_
21	number	number	NOUN	NN	Number=Sing	19	obl	_	_
22	,	,	PUNCT	,	_	27	punct	_	_
23	what	what	PRON	WP	PronType=Int	27	nsubj	_	_
24	ate	eat	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	23	acl:relcl	_	_
25	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	24	obj	_	_
26	will	will	AUX	MD	VerbForm=Fin	27	aux	_	_
27	go	go	VERB	VB	VerbForm=Inf	21	acl	_	_
28	hungry	hungry	ADJ	JJ	Degree=Pos	27	xcomp	_	_
29	and	and	CCONJ	CC	_	31	cc	_	_
30	must	must	AUX	MD	VerbForm=Fin	31	aux	_	_
31	switch	switch	VERB	VB	Mood=Imp|VerbForm=Fin	28	conj	_	_
32	food	food	NOUN	NN	Number=Sing	31	obj	_	_
33	,	,	PUNCT	,	_	34	punct	_	_
34	shrink	shrink	VERB	VB	Mood=Imp|VerbForm=Fin	31	conj	_	_
35	or	or	CCONJ	CC	_	36	cc	_	_
36	move	move	VERB	VB	Mood=Imp|VerbForm=Fin	31	conj	_	Agree=R3-conj-first|Haiku=34:conj
37	away	away	ADV	RB	_	36	advmod	_	_
38	.	.	PUNCT	.	_	11	punct	_	Agree=R6-punct-agree|Haiku=2: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 | **guess** | to-infinitive |  |  |  |  |  |  | vn discover-84 «NP V how S»: agent=Agent clause=Topic |
| 2 | **happen** | present |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 3 | **disappear** | present | one living thing |  |  |  |  |  | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 4 | **follow** | infinitive |  | the arrows |  |  |  |  | vn chase-51.6 «NP V NP»: agent=Agent arrow=Theme |
| 5 | **eat** | past | thing | the arrows |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent what=Patient |
| 6 | **grow** | future |  |  |  | number |  |  | vn appear-48.1.1 «NP V PP.location»: agent=Theme in number=Location |
| 7 | **eat** | past |  | thing |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent it=Patient |
| 8 | **go** | future | number |  |  |  |  | hungry *property* | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 9 | **switch** | must | number *not said here* | food |  |  |  |  | vn convert-26.6.2-1-1 «NP V NP»: agent=Agent food=Patient |
| 10 | **shrink** | infinitive | number *not said here* |  |  |  |  |  | vn bend-45.2 «NP.patient V»: agent=Patient |
| 11 | **move away** | infinitive | number *not said here* |  |  |  |  | away *property* | vn roll-51.3.1 «NP.theme V»: agent=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.

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**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:world:030-balance-in-food-webs.lesson:4`.

**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): R3-conj-first ×1, R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×2. **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/).

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