--- title: Ostriches cannot fly, but their wings help them balance, steer and t… — Myth check: do ostriches bury their heads in the… · tree and pragmatics description: Ostriches cannot fly, but their wings help them balance, steer and turn sharply when running, shade their chicks and cool them on hot days. Who acts: Ostriches, wings, adults. A sentence of the lesson «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary sc --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/15/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [Myth check: do ostriches bury their he…](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/) / 15 # Myth check: do ostriches bury their heads in the sand?, sentence 15 Ostriches cannot fly, but their wings help them balance, steer and turn sharply when running, shade their chicks and cool them on hot days. **Who acts:** Ostriches, wings, adults · **What happens:** not fly, help, balance, steer, turn, run · **To what, where:** adults, chicks This is a sentence of the lesson «Myth check: do ostriches bury their heads in the sand?» 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 (Ostriches, wings, adults), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:151-ostriches-and-heads-in-the-sand.lesson:15 # text = Ostriches cannot fly, but their wings help them balance, steer and turn sharply when running, shade their chicks and cool them on hot days. # source = school lesson (ours) # course = biology # lesson = 151-ostriches-and-heads-in-the-sand.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): R1-cc-next ×1, R3-conj-first ×1, R7-rel-agree ×1 1 Ostriches ostrich NOUN NNS Number=Plur 4 nsubj _ _ 2 can can AUX MD VerbForm=Fin 4 aux _ _ 3 not not PART RB Polarity=Neg 4 advmod _ _ 4 fly fly VERB VB VerbForm=Inf 0 root _ _ 5 , , PUNCT , _ 9 punct _ _ 6 but but CCONJ CC _ 9 cc _ _ 7 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 8 nmod:poss _ _ 8 wings wing NOUN NNS Number=Plur 9 nsubj _ _ 9 help help VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 4 conj _ Agree=R7-rel-agree|Haiku=4:parataxis 10 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 9 obj _ _ 11 balance balance VERB VB VerbForm=Inf 9 xcomp _ _ 12 , , PUNCT , _ 13 punct _ _ 13 steer steer VERB VB VerbForm=Inf 11 conj _ _ 14 and and CCONJ CC _ 15 cc _ Agree=R1-cc-next|Haiku=13:cc 15 turn turn VERB VB VerbForm=Inf 11 conj _ Agree=R3-conj-first|Haiku=13:conj 16 sharply sharply ADV RB _ 15 advmod _ _ 17 when when ADV WRB PronType=Int 18 advmod _ _ 18 running run VERB VBG Tense=Pres|VerbForm=Part 15 advcl _ _ 19 , , PUNCT , _ 20 punct _ _ 20 shade shade VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 4 parataxis _ _ 21 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 22 nmod:poss _ _ 22 chicks chick NOUN NNS Number=Plur 20 obj _ _ 23 and and CCONJ CC _ 24 cc _ _ 24 cool cool VERB VB VerbForm=Inf 20 conj _ _ 25 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 24 obj _ _ 26 on on ADP IN _ 28 case _ _ 27 hot hot ADJ JJ Degree=Pos 28 amod _ _ 28 days day NOUN NNS Number=Plur 24 obl _ _ 29 . . PUNCT . _ 4 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: assert - voice: narrator - polarity: none - teacher: changed polarity=none | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **not** **fly** | can | Ostriches | | | | | | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme | | 2 | **help** | present | adults's wings | adults *= adult* | | | | | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent they=Beneficiary clause=Theme | | 3 | **balance** | infinitive | adults *= adult* *not said here* | | | | | | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme | | 4 | **steer** | infinitive | adults *= adult* *not said here* | | | | | | vn accompany-51.7 «NP V NP»: agent=Agent | | 5 | **turn** | infinitive | adults *= adult* *not said here* | | | | | sharply *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme | | 6 | **run** | gerund | adults *= adult* *not said here* | | | | | | vn run-51.3.2-2-1 «NP V»: agent=Theme | | 7 | **shade** | present | | | adults's chicks | | | | vn defend-72.3 «NP V NP»: agent=Agent chick=Beneficiary | | 8 | **cool** | infinitive | | adults *= adult* | | | day | | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent they=Patient | 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. **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:151-ostriches-and-heads-in-the-sand.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): R1-cc-next ×1, R3-conj-first ×1, 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/). - ← previous: [Myth check: do ostriches bury their he…, 14](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/14/) - next →: [Myth check: do ostriches bury their he…, 16](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/16/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/)