---
title: Countries trade because each is good at different things: bananas ne… — Trade, tariffs, rich and poor countries · tree and pragmatics
description: Countries trade because each is good at different things: bananas need about 27°C and Britain's summer days are often around 20°C, so hot countries grow bananas while others make cars or medicines, and they swap. Who acts: Countries, each, bananas, summer days. A sentence of the lesson «Trade, tarif
---

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# Trade, tariffs, rich and poor countries, sentence 1

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Countries trade because each is good at different things: bananas need about 27°C and Britain's summer days are often around 20°C, so hot countries grow bananas while others make cars or medicines, and they swap.

<!-- .vintro -->
**Who acts:** Countries, each, bananas, summer days, hot countries, others · **What happens:** trade, be, need, grow, make, swap · **To what, where:** different things, 27, 20, bananas, cars

<!-- .vabout -->
This is a sentence of the lesson «Trade, tariffs, rich and poor countries» of the money 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 (Countries, each, bananas, summer days), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:money:037-trade-tariffs-rich-and-poor-countries.lesson:1
# text = Countries trade because each is good at different things: bananas need about 27°C and Britain's summer days are often around 20°C, so hot countries grow bananas while others make cars or medicines, and they swap.
# source = school lesson (ours)
# course = money
# lesson = 037-trade-tariffs-rich-and-poor-countries.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, R7-rel-agree ×2
1	Countries	country	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	trade	trade	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	because	because	SCONJ	IN	_	6	mark	_	_
4	each	each	DET	DT	PronType=Tot	6	nsubj	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
6	good	good	ADJ	JJ	Degree=Pos	2	advcl	_	_
7	at	at	ADP	IN	_	9	case	_	_
8	different	different	ADJ	JJ	Degree=Pos	9	amod	_	_
9	things	thing	NOUN	NNS	Number=Plur	6	obl	_	_
10	:	:	PUNCT	:	_	12	punct	_	_
11	bananas	banana	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
13	about	about	ADV	RB	_	14	advmod	_	_
14	27	27	NUM	CD	NumForm=Digit|NumType=Card	12	obj	_	_
15	°	°	SYM	SYM	_	16	compound	_	_
16	C	C	PROPN	NNP	Number=Sing	14	nmod:unmarked	_	_
17	and	and	CCONJ	CC	_	25	cc	_	_
18	Britain	Britain	PROPN	NNP	Number=Sing	21	nmod:poss	_	_
19	's	's	PART	POS	_	18	case	_	_
20	summer	summer	NOUN	NN	Number=Sing	21	compound	_	_
21	days	day	NOUN	NNS	Number=Plur	25	nsubj	_	_
22	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	25	cop	_	_
23	often	often	ADV	RB	_	25	advmod	_	_
24	around	around	ADV	RB	_	25	advmod	_	_
25	20	20	NUM	CD	NumForm=Digit|NumType=Card	12	conj	_	_
26	°	°	SYM	SYM	_	27	compound	_	_
27	C	C	PROPN	NNP	Number=Sing	25	nmod	_	_
28	,	,	PUNCT	,	_	32	punct	_	_
29	so	so	ADV	RB	_	32	advmod	_	_
30	hot	hot	ADJ	JJ	Degree=Pos	31	amod	_	_
31	countries	country	NOUN	NNS	Number=Plur	32	nsubj	_	_
32	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
33	bananas	banana	NOUN	NNS	Number=Plur	32	obj	_	_
34	while	while	SCONJ	IN	_	36	mark	_	_
35	others	other	NOUN	NNS	Number=Plur	36	nsubj	_	_
36	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	32	advcl	_	_
37	cars	car	NOUN	NNS	Number=Plur	36	obj	_	_
38	or	or	CCONJ	CC	_	39	cc	_	_
39	medicines	medicine	NOUN	NNS	Number=Plur	37	conj	_	_
40	,	,	PUNCT	,	_	43	punct	_	_
41	and	and	CCONJ	CC	_	43	cc	_	_
42	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	43	nsubj	_	_
43	swap	swap	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	32	conj	_	Agree=R5-strong|Haiku=2:parataxis
44	.	.	PUNCT	.	_	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 | **trade** | present | Countries |  |  |  |  |  | vn exchange-13.6.1 «NP V NP»: agent=Agent |
| 2 | **is** | present | each |  |  | different things |  | good *property* | tree rules |
| 3 | **need** | present | bananas | 27  ° C |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot 27=Theme |
| 4 | **is a** | present | Britain's summer days | 20 |  |  |  | ° C *nmod*; around, often *property* | tree rules |
| 5 | **grow** | present | hot countries | bananas |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location banana=Theme |
| 6 | **make** | present | others | cars or medicines |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset car=Product |
| 7 | **swap** | present | countries *= country* |  |  |  |  |  | vn substitute-13.6.2 «NP V PP.co-theme»: 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:money:037-trade-tariffs-rich-and-poor-countries.lesson:1`.

**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, 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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