---
title: The bald eagle on American coins nearly vanished, because a pesticid… — Comeback stories: bald eagles, humpback whales,… · tree and pragmatics
description: The bald eagle on American coins nearly vanished, because a pesticide called DDT made its eggshells so thin that they cracked when the parents sat on them; after DDT was banned in 1972 and eagles were protected, the numbers grew from about 400 pairs to over 70,000. Who acts: pesticide, eggshells, pa
---

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# Comeback stories: bald eagles, humpback whales, condors and the kakapo, sentence 1

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The bald eagle on American coins nearly vanished, because a pesticide called DDT made its eggshells so thin that they cracked when the parents sat on them; after DDT was banned in 1972 and eagles were protected, the numbers grew from about 400 pairs to over 70,000.

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**Who acts:** pesticide, eggshells, parents, numbers · **What happens:** vanish, call, make, crack, sit, ban · **To what, where:** bald eagle, pesticide, eggshells, DDT, 1972, eagles · **Speech:** someone speaks here

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This is a sentence of the lesson «Comeback stories: bald eagles, humpback whales, condors and the kakapo» 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 (pesticide, eggshells, parents, numbers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:282-comeback-stories-bald-eagles-humpback-whales-condors-and-the-kakapo.lesson:1
# text = The bald eagle on American coins nearly vanished, because a pesticide called DDT made its eggshells so thin that they cracked when the parents sat on them; after DDT was banned in 1972 and eagles were protected, the numbers grew from about 400 pairs to over 70,000.
# source = school lesson (ours)
# course = biology
# lesson = 282-comeback-stories-bald-eagles-humpback-whales-condors-and-the-kakapo.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 ×2, R8-pos-agree ×1
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	bald	bald	ADJ	JJ	Degree=Pos	3	amod	_	_
3	eagle	eagle	NOUN	NN	Number=Sing	8	nsubj:pass	_	_
4	on	on	ADP	IN	_	6	case	_	_
5	American	American	ADJ	JJ	Degree=Pos	6	amod	_	_
6	coins	coin	NOUN	NNS	Number=Plur	3	nmod	_	_
7	nearly	nearly	ADV	RB	_	8	advmod	_	_
8	vanished	vanish	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	Agree=R8-pos-agree|Haiku=0:root|HaikuPos=VERB:VBN:Tense=Past|VerbForm=Part|Voice=Pass
9	,	,	PUNCT	,	_	15	punct	_	_
10	because	because	SCONJ	IN	_	15	mark	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	pesticide	pesticide	NOUN	NN	Number=Sing	15	nsubj	_	_
13	called	call	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	12	acl	_	_
14	DDT	DDT	PROPN	NNP	Number=Sing	13	xcomp	_	_
15	made	make	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	8	advcl	_	Agree=R7-rel-agree|Haiku=8:conj
16	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	17	nmod:poss	_	_
17	eggshells	eggshell	NOUN	NNS	Number=Plur	15	obj	_	_
18	so	so	ADV	RB	_	19	advmod	_	_
19	thin	thin	ADJ	JJ	Degree=Pos	15	xcomp	_	_
20	that	that	SCONJ	IN	_	22	mark	_	_
21	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	22	nsubj	_	_
22	cracked	crack	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	15	advcl	_	_
23	when	when	ADV	WRB	PronType=Int	26	advmod	_	_
24	the	the	DET	DT	Definite=Def|PronType=Art	25	det	_	_
25	parents	parent	NOUN	NNS	Number=Plur	26	nsubj	_	_
26	sat	sit	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	22	advcl	_	_
27	on	on	ADP	IN	_	28	case	_	_
28	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	26	obl	_	_
29	;	;	PUNCT	:	_	33	punct	_	_
30	after	after	SCONJ	IN	_	33	mark	_	Agree=R5-strong|Haiku=31:case|HaikuPos=ADP:IN:_
31	DDT	DDT	PROPN	NNP	Number=Sing	33	nsubj:pass	_	Agree=R7-rel-agree|Haiku=33:obl
32	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	33	aux:pass	_	_
33	banned	ban	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	43	advcl	_	_
34	in	in	ADP	IN	_	35	case	_	_
35	1972	1972	NUM	CD	NumForm=Digit|NumType=Card	33	obl	_	_
36	and	and	CCONJ	CC	_	39	cc	_	_
37	eagles	eagle	NOUN	NNS	Number=Plur	39	nsubj:pass	_	_
38	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	39	aux:pass	_	_
39	protected	protect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	33	conj	_	_
40	,	,	PUNCT	,	_	43	punct	_	_
41	the	the	DET	DT	Definite=Def|PronType=Art	42	det	_	_
42	numbers	number	NOUN	NNS	Number=Plur	43	nsubj	_	_
43	grew	grow	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	22	conj	_	_
44	from	from	ADP	IN	_	47	case	_	_
45	about	about	ADV	RB	_	46	advmod	_	_
46	400	400	NUM	CD	NumForm=Digit|NumType=Card	47	nummod	_	_
47	pairs	pair	NOUN	NNS	Number=Plur	43	obl	_	_
48	to	to	ADP	IN	_	50	case	_	_
49	over	over	ADV	RB	_	50	advmod	_	_
50	70,000	70,000	NUM	CD	NumForm=Digit|NumType=Card	43	obl	_	Agree=R5-strong|Haiku=47:nmod
51	.	.	PUNCT	.	_	8	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 | **vanish** | past · passive |  | the bald eagle on American coins |  |  |  | nearly *property* | tree rules |
| 2 | **call** | participle |  | a pesticide *not said here* |  |  |  |  | vn initiate\_communication-37.4.2-1 «NP V»: agent=Agent |
| 3 | **make** | past | a pesticide | pesticide's eggshells |  |  |  | thin *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset eggshell=Product |
| 4 | **crack** | past | eggshells *= eggshell* |  |  |  |  |  | vn sound\_emission-43.2 «NP V»: agent=Theme |
| 5 | **sit** | past | the parents |  |  |  |  | on eggshells *= eggshell* | vn assuming\_position-50 «NP V PP.location»: agent=Agent on they=Location |
| 6 | **ban** | past · passive |  | DDT |  | 1972 |  |  | vn forbid-64.4-1 «NP V NP»: subject=Theme |
| 7 | **protect** | past · passive |  | eagles |  |  |  |  | vn defend-72.3 «NP V NP»: subject=Beneficiary |
| 8 | **grow** | past | the numbers |  |  | 400 pairs |  | to 70,000 *result* | vn calibratable\_cos-45.6.1-1 «NP.patient V PP.extent PP.source PP.goal»: agent=Patient from pair=Initial\_State to 70,000=Result |

<!-- .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:282-comeback-stories-bald-eagles-humpback-whales-condors-and-the-kakapo.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 ×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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