---
title: Only about a tenth of the energy at one step of a food chain passes… — Balance in a food web · tree and pragmatics
description: Only about a tenth of the energy at one step of a food chain passes on to the next step. Who acts: tenth. A sentence of the lesson «Balance in a food web» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Balance in a food web, sentence 5

<!-- .ven lang=en -->
Only about a tenth of the energy at one step of a food chain passes on to the next step.

<!-- .vintro -->
**Who acts:** tenth · **What happens:** pass on, step · **To what, where:** food chain

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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 (tenth), 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:5
# text = Only about a tenth of the energy at one step of a food chain passes on to the next step.
# 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): R7-rel-agree ×1
1	Only	only	ADV	RB	_	4	advmod	_	_
2	about	about	ADP	IN	_	4	case	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	tenth	tenth	NOUN	NN	Number=Sing	15	nsubj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	energy	energy	NOUN	NN	Number=Sing	4	nmod	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	one	one	NUM	CD	NumForm=Word|NumType=Card	10	nummod	_	_
10	step	step	NOUN	NN	Number=Sing	4	nmod	_	_
11	of	of	ADP	IN	_	14	case	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
13	food	food	NOUN	NN	Number=Sing	14	compound	_	_
14	chain	chain	NOUN	NN	Number=Sing	10	nmod	_	_
15	passes	pass	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
16	on	on	ADP	RP	_	15	compound:prt	_	Agree=R7-rel-agree|Haiku=15:advmod|HaikuPos=ADV:RB:_
17	to	to	ADP	IN	_	20	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	next	next	ADJ	JJ	Degree=Pos	20	amod	_	_
20	step	step	NOUN	NN	Number=Sing	15	obl	_	_
21	.	.	PUNCT	.	_	15	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 | **pass on** | present | a tenth of the energy at one step of a food chain |  |  |  |  | to the next step | vn send-11.1 «NP V NP PP.destination»: agent=Agent to step=Destination |
| 2 | **step** |  |  | a food chain |  |  |  |  | nom step «act transitive»: of=patient |

<!-- .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:5`.

**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): R7-rel-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/).

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- ← previous: [Balance in a food web, 4](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/4/)
- next →: [Balance in a food web, 6](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/6/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/)