---
title: It is given that a pen valued at three pounds is exchanged for a pen… — Swaps and barter in the playground · tree and pragmatics
description: It is given that a pen valued at three pounds is exchanged for a pencil valued at twenty pence. Ascertain the excess of value surrendered by the owner of the pen. Exam question 3 of lesson 4 «Swaps and barter in the playground» of the money course of Mova's primary school, with the dependency tree a
---

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# Exam question 3 · Swaps and barter in the playground

<!-- .ven lang=en -->
It is given that a pen valued at three pounds is exchanged for a pencil valued at twenty pence. Ascertain the excess of value surrendered by the owner of the pen.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** give, value, exchange, ascertain, surrender · **To what, where:** It, pen, three pounds, pencil, twenty pence, excess

<!-- .vabout -->
This is exam question 3 of lesson 4 «Swaps and barter in the playground» of the money 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/money/4-swaps-and-barter-in-the-playground/#e3).

## The question {#question}

<!-- .note -->
*Sentence 1:* It is given that a pen valued at three pounds is exchanged for a pencil valued at twenty pence.

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:1
# text = It is given that a pen valued at three pounds is exchanged for a pencil valued at twenty pence.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	that	that	SCONJ	IN	_	12	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	pen	pen	NOUN	NN	Number=Sing	12	nsubj:pass	_	_
7	valued	value	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	acl	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	three	three	NUM	CD	NumForm=Word|NumType=Card	10	nummod	_	_
10	pounds	pound	NOUN	NNS	Number=Plur	7	obl	_	_
11	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	aux:pass	_	_
12	exchanged	exchange	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
13	for	for	ADP	IN	_	15	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	pencil	pencil	NOUN	NN	Number=Sing	12	obl	_	_
16	valued	value	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	acl	_	_
17	at	at	ADP	IN	_	19	case	_	_
18	twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	19	nummod	_	_
19	pence	pence	NOUN	NNS	Number=Plur	16	obl	_	SpaceAfter=No
20	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | present · passive |  | It |  |  |  |  | vn give-13.1-1 «NP V NP»: subject=Theme |
| 2 | **value** | participle |  | a pen *not said here* |  | three pounds |  |  | vn price-54.4 «NP V NP PP.value»: agent=Agent at pound=Value |
| 3 | **exchange** | present · passive |  | a pen |  |  |  | for a pencil | vn exchange-13.6.1 «NP V NP PP.co-theme»: subject=Theme for pencil=Co-Theme |
| 4 | **value** | participle |  | a pencil *not said here* |  | twenty pence |  |  | vn price-54.4 «NP V NP PP.value»: agent=Agent at pence=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.

<!-- .note -->
*Sentence 2:* Ascertain the excess of value surrendered by the owner of the pen.

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:2
# text = Ascertain the excess of value surrendered by the owner of the pen.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	excess	excess	NOUN	NN	Number=Sing	1	obj	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	value	value	NOUN	NN	Number=Sing	3	nmod	_	_
6	surrendered	surrender	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	acl	_	_
7	by	by	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	owner	owner	NOUN	NN	Number=Sing	6	obl	_	_
10	of	of	ADP	IN	_	12	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	pen	pen	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
13	.	.	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 excess of value |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent excess=Topic |
| 2 | **surrender** | participle |  | the excess of value *not said here* |  |  |  | by the owner of the pen | vn contribute-13.2-1-1 «NP V»: agent=Agent |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
One pound eighty pence

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:o1:1
# text = One pound eighty pence
1	One	one	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	pound	pound	NOUN	NN	Number=Sing	4	compound	_	_
3	eighty	eighty	NUM	CD	NumForm=Word|NumType=Card	2	flat	_	_
4	pence	pence	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
Three pounds twenty pence

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:o2:1
# text = Three pounds twenty pence
1	Three	three	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	pounds	pound	NOUN	NNS	Number=Plur	0	root	_	_
3	twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	pence	pence	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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

<!-- .ven lang=en -->
Two pounds eighty pence

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:o3:1
# text = Two pounds eighty pence
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	pounds	pound	NOUN	NNS	Number=Plur	0	root	_	_
3	eighty	eighty	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	pence	pence	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
Two pounds twenty pence

```conllu
# sent_id = question:money:4-swaps-and-barter-in-the-playground:e3:o4:1
# text = Two pounds twenty pence
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	pounds	pound	NOUN	NNS	Number=Plur	0	root	_	_
3	twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	pence	pence	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .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.

<!-- /div -->

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