---
title: Sharks lose and replace thousands of teeth in their lives; old teeth… — Megalodon and the giants of the sea, past and pr… · tree and pragmatics
description: Sharks lose and replace thousands of teeth in their lives; old teeth fall to the sea floor, can become fossils, and are turned black by minerals over a long time. Who acts: Sharks, old teeth, minerals. A sentence of the lesson «Megalodon and the giants of the sea, past and present» of the biology co
---

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# Megalodon and the giants of the sea, past and present, sentence 15

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Sharks lose and replace thousands of teeth in their lives; old teeth fall to the sea floor, can become fossils, and are turned black by minerals over a long time.

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**Who acts:** Sharks, old teeth, minerals · **What happens:** lose, replace, fall, become, turn · **To what, where:** thousands, lives, fossils

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This is a sentence of the lesson «Megalodon and the giants of the sea, past and present» 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 (Sharks, old teeth, minerals), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:273-megalodon-and-the-giants-of-the-sea.lesson:15
# text = Sharks lose and replace thousands of teeth in their lives; old teeth fall to the sea floor, can become fossils, and are turned black by minerals over a long time.
# source = school lesson (ours)
# course = biology
# lesson = 273-megalodon-and-the-giants-of-the-sea.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): R8-pos-agree ×1
1	Sharks	shark	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	lose	lose	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	and	and	CCONJ	CC	_	4	cc	_	_
4	replace	replace	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
5	thousands	thousand	NOUN	NNS	Number=Plur	4	obj	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	teeth	tooth	NOUN	NNS	Number=Plur	5	nmod	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
10	lives	life	NOUN	NNS	Number=Plur	5	nmod	_	_
11	;	;	PUNCT	,	_	14	punct	_	_
12	old	old	ADJ	JJ	Degree=Pos	13	amod	_	_
13	teeth	tooth	NOUN	NNS	Number=Plur	14	nsubj	_	Agree=R8-pos-agree|Haiku=14:nsubj|HaikuPos=NOUN:NN:Number=Sing
14	fall	fall	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	_
15	to	to	ADP	IN	_	18	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
17	sea	sea	NOUN	NN	Number=Sing	18	compound	_	_
18	floor	floor	NOUN	NN	Number=Sing	14	obl	_	_
19	,	,	PUNCT	,	_	21	punct	_	_
20	can	can	AUX	MD	VerbForm=Fin	21	aux	_	_
21	become	become	VERB	VB	VerbForm=Inf	14	conj	_	_
22	fossils	fossil	NOUN	NNS	Number=Plur	21	xcomp	_	_
23	,	,	PUNCT	,	_	26	punct	_	_
24	and	and	CCONJ	CC	_	26	cc	_	_
25	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	26	aux:pass	_	_
26	turned	turn	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	14	conj	_	_
27	black	black	ADJ	JJ	Degree=Pos	26	xcomp	_	_
28	by	by	ADP	IN	_	29	case	_	_
29	minerals	mineral	NOUN	NNS	Number=Plur	26	obl	_	_
30	over	over	ADP	IN	_	33	case	_	_
31	a	a	DET	DT	Definite=Ind|PronType=Art	33	det	_	_
32	long	long	ADJ	JJ	Degree=Pos	33	amod	_	_
33	time	time	NOUN	NN	Number=Sing	26	obl	_	_
34	.	.	PUNCT	.	_	2	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 | **lose** | present | Sharks |  |  |  |  |  | vn succeed-74-3-1 «NP V»: agent=Agent |
| 2 | **replace** | present | Sharks *not said here* | thousands of teeth |  | whales's lives |  |  | vn substitute-13.6.2-1 «NP V NP»: agent=Theme thousand=Co-Theme |
| 3 | **fall** | present | old teeth |  |  |  |  | to the sea floor | vn acquiesce-95.1-1 «NP V PP.theme»: agent=Agent to floor=Theme |
| 4 | **become** | can | old teeth *not said here* | fossils |  |  |  |  | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |
| 5 | **turn** | present · passive | minerals |  |  |  | time | black *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |

<!-- .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:273-megalodon-and-the-giants-of-the-sea.lesson:15`.

**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): 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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