---
title: Red blood cells carry oxygen using iron-rich haemoglobin, white cell… — The heart and blood · tree and pragmatics
description: Red blood cells carry oxygen using iron-rich haemoglobin, white cells fight germs, and platelets help stop bleeding. Who acts: Red blood cells, white cells, platelets. A sentence of the lesson «The heart and blood» of the biology course of Mova's primary school with its dependency tree and the pragm
---

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# The heart and blood, sentence 9

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Red blood cells carry oxygen using iron-rich haemoglobin, white cells fight germs, and platelets help stop bleeding.

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**Who acts:** Red blood cells, white cells, platelets · **What happens:** carry, use, fight, help, stop · **To what, where:** oxygen, iron rich haemoglobin, germs, bleeding

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This is a sentence of the lesson «The heart and blood» of the biology 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 (Red blood cells, white cells, platelets), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:065-the-heart-and-blood.lesson:9
# text = Red blood cells carry oxygen using iron-rich haemoglobin, white cells fight germs, and platelets help stop bleeding.
# source = school lesson (ours)
# course = biology
# lesson = 065-the-heart-and-blood.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): R7-rel-agree ×1
1	Red	red	ADJ	JJ	Degree=Pos	3	amod	_	_
2	blood	blood	NOUN	NN	Number=Sing	3	compound	_	_
3	cells	cell	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	carry	carry	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	oxygen	oxygen	NOUN	NN	Number=Sing	4	obj	_	_
6	using	use	VERB	VBG	VerbForm=Ger	4	advcl	_	_
7	iron	iron	NOUN	NN	Number=Sing	10	compound	_	_
8	-	-	PUNCT	HYPH	_	10	punct	_	_
9	rich	rich	ADJ	JJ	Degree=Pos	10	amod	_	_
10	haemoglobin	haemoglobin	NOUN	NN	Number=Sing	6	obj	_	_
11	,	,	PUNCT	,	_	14	punct	_	_
12	white	white	ADJ	JJ	Degree=Pos	13	amod	_	_
13	cells	cell	NOUN	NNS	Number=Plur	14	nsubj	_	_
14	fight	fight	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
15	germs	germ	NOUN	NNS	Number=Plur	14	obj	_	_
16	,	,	PUNCT	,	_	19	punct	_	_
17	and	and	CCONJ	CC	_	19	cc	_	_
18	platelets	platelet	NOUN	NNS	Number=Plur	19	nsubj	_	_
19	help	help	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
20	stop	stop	VERB	VB	VerbForm=Inf	19	xcomp	_	_
21	bleeding	bleeding	NOUN	NN	Number=Sing	20	obj	_	Agree=R7-rel-agree|Haiku=20:xcomp|HaikuPos=VERB:VBG:VerbForm=Ger
22	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **carry** | present | Red blood cells | oxygen |  |  |  |  | vn carry-11.4 «NP V NP»: agent=Agent oxygen=Theme |
| 2 | **use** | gerund | Red blood cells *not said here* | iron rich haemoglobin |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent haemoglobin=Patient |
| 3 | **fight** | present | white cells | germs |  |  |  |  | vn battle-36.4-1 «NP V NP»: agent=Agent germ=Co-Agent |
| 4 | **help** | present | platelets |  |  |  |  |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent clause=Theme |
| 5 | **stop** | infinitive | platelets *not said here* | bleeding |  |  |  |  | vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality bleeding=Eventuality |

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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:biology:065-the-heart-and-blood.lesson:9`.

**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): R7-rel-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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