---
title: On a balance, 3 equal bags and a 5 kg weight against 26 kg mean the… — The unknown number: equations as stories · tree and pragmatics
description: On a balance, 3 equal bags and a 5 kg weight against 26 kg mean the bags weigh 21 kg, so one bag weighs 7 kg. Who acts: 3 equal bags, bags, one bag. A sentence of the lesson «The unknown number: equations as stories» of the lessons course of Mova's primary school with its dependency tree and the pra
---

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# The unknown number: equations as stories, sentence 4

<!-- .ven lang=en -->
On a balance, 3 equal bags and a 5 kg weight against 26 kg mean the bags weigh 21 kg, so one bag weighs 7 kg.

<!-- .vintro -->
**Who acts:** 3 equal bags, bags, one bag · **What happens:** mean, weigh · **To what, where:** balance, 21 kg, 7 kg · **Speech:** someone speaks here

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This is a sentence of the lesson «The unknown number: equations as stories» of the lessons 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 (3 equal bags, bags, one bag), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:lessons:138-equations-as-stories.lesson:4
# text = On a balance, 3 equal bags and a 5 kg weight against 26 kg mean the bags weigh 21 kg, so one bag weighs 7 kg.
# source = school lesson (ours)
# course = lessons
# lesson = 138-equations-as-stories.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): R6-punct-agree ×1, R7-rel-agree ×2
1	On	on	ADP	IN	_	3	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
3	balance	balance	NOUN	NN	Number=Sing	16	obl	_	_
4	,	,	PUNCT	,	_	7	punct	_	_
5	3	3	NUM	CD	NumForm=Digit|NumType=Card	7	nummod	_	_
6	equal	equal	ADJ	JJ	Degree=Pos	7	amod	_	_
7	bags	bag	NOUN	NNS	Number=Plur	16	nsubj	_	_
8	and	and	CCONJ	CC	_	12	cc	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
10	5	5	NUM	CD	NumForm=Digit|NumType=Card	11	nummod	_	_
11	kg	kg	NOUN	NN	Number=Sing	12	compound	_	_
12	weight	weight	NOUN	NN	Number=Sing	7	conj	_	_
13	against	against	ADP	IN	_	15	case	_	_
14	26	26	NUM	CD	NumForm=Digit|NumType=Card	15	nummod	_	_
15	kg	kg	NOUN	NNS	Number=Plur	12	nmod	_	_
16	mean	mean	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	bags	bag	NOUN	NNS	Number=Plur	19	nsubj	_	Agree=R7-rel-agree|Haiku=19:obj
19	weigh	weigh	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	16	ccomp	_	_
20	21	21	NUM	CD	NumForm=Digit|NumType=Card	21	nummod	_	_
21	kg	kg	NOUN	NNS	Number=Plur	19	obj	_	_
22	,	,	PUNCT	,	_	26	punct	_	_
23	so	so	ADV	RB	_	26	advmod	_	_
24	one	one	NUM	CD	NumForm=Word|NumType=Card	25	nummod	_	_
25	bag	bag	NOUN	NN	Number=Sing	26	nsubj	_	Agree=R7-rel-agree|Haiku=26:compound
26	weighs	weigh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	19	conj	_	_
27	7	7	NUM	CD	NumForm=Digit|NumType=Card	28	nummod	_	_
28	kg	kg	NOUN	NNS	Number=Plur	26	obj	_	_
29	.	.	PUNCT	.	_	16	punct	_	Agree=R6-punct-agree|Haiku=26: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 | **mean** | present | 3 equal bags and a kg weight against 26 kg |  |  | a balance |  |  | vn intend-61.2-1 «NP V S»: agent=Agent clause=Topic |
| 2 | **weigh** | present | the bags | 21 kg |  |  |  |  | vn register-54.1-2-1 «NP V NP.value»: agent=Theme kg=Value |
| 3 | **weigh** | present | one bag | 7 kg |  |  |  |  | vn register-54.1-2-1 «NP V NP.value»: agent=Theme kg=Value |

<!-- .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:lessons:138-equations-as-stories.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): 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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- ← previous: [The unknown number: equations as stories, 3](https://md.mova.elamur.ai/free/en/corpora/school/lessons/138-equations-as-stories/3/)
- next →: [Cuts and pieces, posts and gaps, 0](https://md.mova.elamur.ai/free/en/corpora/school/lessons/139-cuts-and-gaps/0/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/lessons/138-equations-as-stories/)