---
title: The golden rule of a best buy is to compare the same amount: four ju… — Olympiad: best buys and change at the till ★★★ · tree and pragmatics
description: The golden rule of a best buy is to compare the same amount: four juice cartons of 250 ml at 40p make a litre for £1.60, while the 1 litre bottle is £1.50 - the bottle wins, and the giant 2 litre bottle at £3.20 does not. Who acts: golden rule, bottle, best buy. A sentence of the lesson «Olympiad: b
---

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# Olympiad: best buys and change at the till ★★★, sentence 1

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The golden rule of a best buy is to compare the same amount: four juice cartons of 250 ml at 40p make a litre for £1.60, while the 1 litre bottle is £1.50 - the bottle wins, and the giant 2 litre bottle at £3.20 does not.

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**Who acts:** golden rule, bottle, best buy · **What happens:** be, make, win, not do, rule · **To what, where:** litre

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This is a sentence of the lesson «Olympiad: best buys and change at the till ★★★» 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 (golden rule, bottle, best buy), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:money:041-olympiad-best-buys-and-change-at-the-till.lesson:1
# text = The golden rule of a best buy is to compare the same amount: four juice cartons of 250 ml at 40p make a litre for £1.60, while the 1 litre bottle is £1.50 - the bottle wins, and the giant 2 litre bottle at £3.20 does not.
# source = school lesson (ours)
# course = money
# lesson = 041-olympiad-best-buys-and-change-at-the-till.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 ×2, R7-rel-agree ×1, R8-pos-agree ×2
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	golden	golden	ADJ	JJ	Degree=Pos	3	amod	_	_
3	rule	rule	NOUN	NN	Number=Sing	10	nsubj:outer	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	best	good	ADJ	JJS	Degree=Sup	7	amod	_	_
7	buy	buy	NOUN	NN	Number=Sing	3	nmod	_	_
8	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	cop	_	_
9	to	to	PART	TO	_	10	mark	_	_
10	compare	compare	VERB	VB	VerbForm=Inf	0	root	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	same	same	ADJ	JJ	Degree=Pos	13	amod	_	_
13	amount	amount	NOUN	NN	Number=Sing	10	obj	_	_
14	:	:	PUNCT	:	_	17	punct	_	_
15	four	four	NUM	CD	NumForm=Word|NumType=Card	17	nummod	_	_
16	juice	juice	NOUN	NN	Number=Sing	17	compound	_	_
17	cartons	carton	NOUN	NNS	Number=Plur	13	nmod	_	_
18	of	of	ADP	IN	_	20	case	_	_
19	250	250	NUM	CD	NumForm=Digit|NumType=Card	20	nummod	_	_
20	ml	ml	NOUN	NNS	Number=Plur	17	nmod	_	Agree=R8-pos-agree|Haiku=17:nmod|HaikuPos=NOUN:NN:Number=Sing
21	at	at	ADP	IN	_	23	case	_	_
22	40	40	NUM	CD	NumForm=Digit|NumType=Card	23	nummod	_	_
23	p	p	NOUN	NN	Number=Sing	17	nmod	_	Agree=R5-strong|Haiku=24:obl
24	make	make	VERB	VB	VerbForm=Inf	10	advcl	_	_
25	a	a	DET	DT	Definite=Ind|PronType=Art	26	det	_	_
26	litre	litre	NOUN	NN	Number=Sing	24	obj	_	_
27	for	for	ADP	IN	_	28	case	_	_
28	£	£	SYM	$	_	24	obl	_	_
29	1.60	1.60	NUM	CD	NumForm=Digit|NumType=Frac	28	nummod	_	_
30	,	,	PUNCT	,	_	37	punct	_	_
31	while	while	SCONJ	IN	_	37	mark	_	_
32	the	the	DET	DT	Definite=Def|PronType=Art	35	det	_	_
33	1	1	NUM	CD	NumForm=Digit|NumType=Card	34	nummod	_	_
34	litre	litre	NOUN	NN	Number=Sing	35	compound	_	_
35	bottle	bottle	NOUN	NN	Number=Sing	37	nsubj	_	_
36	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	37	cop	_	_
37	£	£	SYM	$	_	24	advcl	_	_
38	1.50	1.50	NUM	CD	NumForm=Digit|NumType=Frac	37	nummod	_	_
39	-	-	PUNCT	,	_	42	punct	_	Agree=R8-pos-agree|Haiku=42:punct|HaikuPos=PUNCT:::_
40	the	the	DET	DT	Definite=Def|PronType=Art	41	det	_	Agree=R5-strong|Haiku=42:det
41	bottle	bottle	NOUN	NN	Number=Sing	42	nsubj	_	Agree=R7-rel-agree|Haiku=42:compound
42	wins	win	NOUN	NNS	Number=Plur	37	conj	_	_
43	,	,	PUNCT	,	_	49	punct	_	_
44	and	and	CCONJ	CC	_	49	cc	_	_
45	the	the	DET	DT	Definite=Def|PronType=Art	49	det	_	_
46	giant	giant	ADJ	JJ	Degree=Pos	49	amod	_	_
47	2	2	NUM	CD	NumForm=Digit|NumType=Card	48	nummod	_	_
48	litre	litre	NOUN	NN	Number=Sing	49	compound	_	_
49	bottle	bottle	NOUN	NN	Number=Sing	37	appos	_	_
50	at	at	ADP	IN	_	51	case	_	_
51	£	£	SYM	$	_	49	nmod	_	_
52	3.20	3.20	NUM	CD	NumForm=Digit|NumType=Frac	51	nummod	_	_
53	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	51	conj	_	_
54	not	not	PART	RB	Polarity=Neg	53	advmod	_	_
55	.	.	PUNCT	.	_	10	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: narrate
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the golden rule of a best buy |  |  |  |  | compare *property* | tree rules |
| 2 | **make** | infinitive | the golden rule of a best buy *not said here* | a litre |  |  |  |  | vn build-26.1-1 «NP V NP P.asset»: agent=Agent litre=Product for £=Asset |
| 3 | **win** |  | the bottle |  |  |  |  |  | tree rules |
| 4 | **not** **do** | present | the golden rule of a best buy *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 5 | **rule** |  | a best buy |  |  |  |  |  | nom rule «cognition intransitive»: of=agent |

<!-- .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:041-olympiad-best-buys-and-change-at-the-till.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 ×2, R7-rel-agree ×1, R8-pos-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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- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/money/41-olympiad-best-buys-and-change-at-the-till/)

