---
title: Many bird bones are hollow with thin struts and connect to air sacs… — The end of the dinosaurs, and birds as living di… · tree and pragmatics
description: Many bird bones are hollow with thin struts and connect to air sacs for breathing, which makes them light but still strong for flying; giant sauropod dinosaurs had air sacs in their bones too. Who acts: Many bird bones, giant sauropod dinosaurs. A sentence of the lesson «The end of the dinosaurs, an
---

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# The end of the dinosaurs, and birds as living dinosaurs, sentence 14

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Many bird bones are hollow with thin struts and connect to air sacs for breathing, which makes them light but still strong for flying; giant sauropod dinosaurs had air sacs in their bones too.

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**Who acts:** Many bird bones, giant sauropod dinosaurs · **What happens:** be, connect, make, fly, have · **To what, where:** sacs, air sacs, bones

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This is a sentence of the lesson «The end of the dinosaurs, and birds as living dinosaurs» 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 (Many bird bones, giant sauropod dinosaurs), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:076-end-of-the-dinosaurs-and-birds.lesson:14
# text = Many bird bones are hollow with thin struts and connect to air sacs for breathing, which makes them light but still strong for flying; giant sauropod dinosaurs had air sacs in their bones too.
# source = school lesson (ours)
# course = biology
# lesson = 076-end-of-the-dinosaurs-and-birds.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 ×1
1	Many	many	ADJ	JJ	Degree=Pos	3	amod	_	_
2	bird	bird	NOUN	NN	Number=Sing	3	compound	_	_
3	bones	bone	NOUN	NNS	Number=Plur	5	nsubj	_	_
4	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
5	hollow	hollow	ADJ	JJ	Degree=Pos	0	root	_	_
6	with	with	ADP	IN	_	8	case	_	_
7	thin	thin	ADJ	JJ	Degree=Pos	8	amod	_	_
8	struts	strut	NOUN	NNS	Number=Plur	5	obl	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	connect	connect	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	Agree=R8-pos-agree|Haiku=5:conj|HaikuPos=VERB:VB:VerbForm=Inf
11	to	to	ADP	IN	_	13	case	_	_
12	air	air	NOUN	NN	Number=Sing	13	compound	_	_
13	sacs	sac	NOUN	NNS	Number=Plur	10	obl	_	_
14	for	for	ADP	IN	_	15	case	_	_
15	breathing	breathing	NOUN	NN	Number=Sing	13	nmod	_	_
16	,	,	PUNCT	,	_	18	punct	_	_
17	which	which	PRON	WDT	PronType=Rel	18	nsubj	_	_
18	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	conj	_	_
19	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	18	obj	_	_
20	light	light	ADJ	JJ	Degree=Pos	18	xcomp	_	_
21	but	but	CCONJ	CC	_	23	cc	_	_
22	still	still	ADV	RB	_	23	advmod	_	_
23	strong	strong	ADJ	JJ	Degree=Pos	20	conj	_	Agree=R5-strong|Haiku=5:conj
24	for	for	SCONJ	IN	_	25	mark	_	_
25	flying	fly	VERB	VBG	Tense=Pres|VerbForm=Part	23	advcl	_	_
26	;	;	PUNCT	:	_	30	punct	_	_
27	giant	giant	ADJ	JJ	Degree=Pos	29	amod	_	_
28	sauropod	sauropod	NOUN	NN	Number=Sing	29	compound	_	_
29	dinosaurs	dinosaur	NOUN	NNS	Number=Plur	30	nsubj	_	_
30	had	have	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	5	parataxis	_	Agree=R7-rel-agree|Haiku=5:conj
31	air	air	NOUN	NN	Number=Sing	32	compound	_	_
32	sacs	sac	NOUN	NNS	Number=Plur	30	obj	_	_
33	in	in	ADP	IN	_	35	case	_	_
34	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	35	nmod:poss	_	_
35	bones	bone	NOUN	NNS	Number=Plur	30	obl	_	Agree=R5-strong|Haiku=32:nmod
36	too	too	ADV	RB	_	30	advmod	_	_
37	.	.	PUNCT	.	_	5	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** | present | Many bird bones |  |  |  |  | with thin struts; hollow *property* | tree rules |
| 2 | **connect** | present | Many bird bones *not said here* |  |  |  |  | to air sacs for breathing | vn mix-22.1-2-1 «NP V PP.patient»: agent=Patient to sac=Co-Patient |
| 3 | **make** | present |  | sacs *= sac* |  |  |  | light *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset they=Product |
| 4 | **fly** | gerund |  |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |
| 5 | **have** | past | giant sauropod dinosaurs | air sacs |  | dinosaurs's bones |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent sac=Patient |

<!-- .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:biology:076-end-of-the-dinosaurs-and-birds.lesson:14`.

**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 ×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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