---
title: Early birds such as Hesperornis and Ichthyornis had teeth; modern bi… — Feathered dinosaurs: from Archaeopteryx to the c… · tree and pragmatics
description: Early birds such as Hesperornis and Ichthyornis had teeth; modern birds lost their teeth and grew light beaks, which helps them fly. Who acts: Early birds, modern birds, light beaks, Birds. A sentence of the lesson «Feathered dinosaurs: from Archaeopteryx to the chicken on your plate» of the biology
---

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# Feathered dinosaurs: from Archaeopteryx to the chicken on your plate, sentence 16

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Early birds such as Hesperornis and Ichthyornis had teeth; modern birds lost their teeth and grew light beaks, which helps them fly.

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**Who acts:** Early birds, modern birds, light beaks, Birds · **What happens:** have, lose, grow, help, fly · **To what, where:** teeth, light beaks, Birds

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This is a sentence of the lesson «Feathered dinosaurs: from Archaeopteryx to the chicken on your plate» 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 (Early birds, modern birds, light beaks, Birds), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:269-feathered-dinosaurs-archaeopteryx-to-chicken.lesson:16
# text = Early birds such as Hesperornis and Ichthyornis had teeth; modern birds lost their teeth and grew light beaks, which helps them fly.
# source = school lesson (ours)
# course = biology
# lesson = 269-feathered-dinosaurs-archaeopteryx-to-chicken.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): no change
1	Early	early	ADJ	JJ	Degree=Pos	2	amod	_	_
2	birds	bird	NOUN	NNS	Number=Plur	8	nsubj	_	_
3	such	such	ADJ	JJ	Degree=Pos|ExtPos=ADP	5	case	_	_
4	as	as	ADP	IN	_	3	fixed	_	_
5	Hesperornis	Hesperornis	PROPN	NNP	Number=Sing	2	nmod	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	Ichthyornis	Ichthyornis	PROPN	NNP	Number=Sing	5	conj	_	_
8	had	have	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
9	teeth	tooth	NOUN	NNS	Number=Plur	8	obj	_	_
10	;	;	PUNCT	,	_	13	punct	_	_
11	modern	modern	ADJ	JJ	Degree=Pos	12	amod	_	_
12	birds	bird	NOUN	NNS	Number=Plur	13	nsubj	_	_
13	lost	lose	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	8	parataxis	_	_
14	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	15	nmod:poss	_	_
15	teeth	tooth	NOUN	NNS	Number=Plur	13	obj	_	_
16	and	and	CCONJ	CC	_	17	cc	_	_
17	grew	grow	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	13	conj	_	_
18	light	light	ADJ	JJ	Degree=Pos	19	amod	_	_
19	beaks	beak	NOUN	NNS	Number=Plur	17	obj	_	_
20	,	,	PUNCT	,	_	22	punct	_	_
21	which	which	PRON	WDT	PronType=Rel	22	nsubj	_	_
22	helps	help	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	19	acl:relcl	_	_
23	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	22	obj	_	_
24	fly	fly	VERB	VB	VerbForm=Inf	22	xcomp	_	_
25	.	.	PUNCT	.	_	8	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 | **have** | past | Early birds such Hesperornis and Ichthyornis | teeth |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent tooth=Patient |
| 2 | **lose** | past | modern birds | Birds's teeth |  |  |  |  | vn succeed-74-3-1 «NP V NP»: agent=Agent tooth=Eventuality |
| 3 | **grow** | past | modern birds *not said here* | light beaks |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location beak=Theme |
| 4 | **help** | present | light beaks | Birds *= bird* |  |  |  |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent they=Beneficiary clause=Theme |
| 5 | **fly** | infinitive | Birds *= bird* *not said here* |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |

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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:269-feathered-dinosaurs-archaeopteryx-to-chicken.lesson:16`.

**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): no change. **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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- ← previous: [Feathered dinosaurs: from Archaeoptery…, 14](https://md.mova.elamur.ai/free/en/corpora/school/biology/269-feathered-dinosaurs-archaeopteryx-to-chicken/14/)
- next →: [Not dinosaurs at all: pterosaurs, ples…, 0](https://md.mova.elamur.ai/free/en/corpora/school/biology/270-not-dinosaurs-pterosaurs-plesiosaurs-mosasaurs-mary-anning/0/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/269-feathered-dinosaurs-archaeopteryx-to-chicken/)

