---
title: An eraser is rubber or plastic mixed with a gritty powder; rubbing p… — Pencils, paper and school things · tree and pragmatics
description: An eraser is rubber or plastic mixed with a gritty powder; rubbing picks up the graphite and the eraser crumbles away with it; before erasers, people rubbed out pencil with bread. Who acts: eraser, rubbing, people. A sentence of the lesson «Pencils, paper and school things» of the technology course 
---

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# Pencils, paper and school things, sentence 12

<!-- .ven lang=en -->
An eraser is rubber or plastic mixed with a gritty powder; rubbing picks up the graphite and the eraser crumbles away with it; before erasers, people rubbed out pencil with bread.

<!-- .vintro -->
**Who acts:** eraser, rubbing, people · **What happens:** be, mix, pick up, crumble away, rub out · **To what, where:** rubber, graphite, pencil, erasers

<!-- .vabout -->
This is a sentence of the lesson «Pencils, paper and school things» of the technology 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 (eraser, rubbing, people), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:006-pencils-paper-and-school-things.lesson:12
# text = An eraser is rubber or plastic mixed with a gritty powder; rubbing picks up the graphite and the eraser crumbles away with it; before erasers, people rubbed out pencil with bread.
# source = school lesson (ours)
# course = technology
# lesson = 006-pencils-paper-and-school-things.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, R8-pos-agree ×1
1	An	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	eraser	eraser	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	rubber	rubber	NOUN	NN	Number=Sing	0	root	_	_
5	or	or	CCONJ	CC	_	6	cc	_	_
6	plastic	plastic	NOUN	NN	Number=Sing	4	conj	_	_
7	mixed	mix	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl	_	_
8	with	with	ADP	IN	_	11	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	gritty	gritty	ADJ	JJ	Degree=Pos	11	amod	_	_
11	powder	powder	NOUN	NN	Number=Sing	7	obl	_	_
12	;	;	PUNCT	,	_	13	punct	_	_
13	rubbing	rub	NOUN	NN	Number=Sing	14	nsubj	_	_
14	picks	pick	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
15	up	up	ADP	RP	_	14	compound:prt	_	Agree=R8-pos-agree|Haiku=14:compound:prt|HaikuPos=ADP:IN:_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	graphite	graphite	NOUN	NN	Number=Sing	14	obj	_	_
18	and	and	CCONJ	CC	_	21	cc	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	Agree=R5-strong|Haiku=21:det
20	eraser	eraser	NOUN	NN	Number=Sing	21	nsubj	_	_
21	crumbles	crumble	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	conj	_	Agree=R5-strong|Haiku=17:conj
22	away	away	ADV	RB	_	21	advmod	_	_
23	with	with	ADP	IN	_	24	case	_	_
24	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	21	obl	_	_
25	;	;	PUNCT	,	_	27	punct	_	_
26	before	before	ADP	IN	_	27	case	_	_
27	erasers	eraser	NOUN	NNS	Number=Plur	30	obl	_	_
28	,	,	PUNCT	,	_	29	punct	_	_
29	people	people	NOUN	NNS	Number=Plur	30	nsubj	_	_
30	rubbed	rub	VERB	VBD	Mood=Ind|Tense=Past|VerbForm=Fin	4	parataxis	_	_
31	out	out	ADP	RP	_	30	compound:prt	_	_
32	pencil	pencil	NOUN	NN	Number=Sing	30	obj	_	_
33	with	with	ADP	IN	_	34	case	_	_
34	bread	bread	NOUN	NN	Number=Sing	30	obl	_	_
35	.	.	PUNCT	.	_	4	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 | **is a** | present | a eraser | rubber or plastic |  |  |  |  | tree rules |
| 2 | **mix** | participle |  | rubber or plastic *not said here* |  |  |  | with a gritty powder | vn mix-22.1-1-1 «NP V PP.co-patient»: agent=Patient with powder=Co-Patient |
| 3 | **pick up** | present | rubbing | the graphite |  |  |  |  | vn discover-84-1 «NP V NP»: agent=Agent graphite=Topic |
| 4 | **crumble away** | present | the eraser |  |  |  |  | with rubbing *= rub*; away *property* | vn break-45.1 «NP V NP PP.instrument»: agent=Agent with it=Instrument |
| 5 | **rub out** | past | people | pencil |  | erasers |  | with bread | vn spray-9.7-1 «NP V NP PP.destination»: agent=Agent pencil=Theme before eraser=Destination |

<!-- .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:technology:006-pencils-paper-and-school-things.lesson:12`.

**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, R8-pos-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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