--- title: Identify the principal means by which the ostrich evades a predator. — Myth check: do ostriches bury their he… · tree and pragmatics description: Identify the principal means by which the ostrich evades a predator. Exam question 2 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wr --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/e2/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/questions/biology/) / [Myth check: do ostriches bury their he…](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/) / e2 # Exam question 2 · Myth check: do ostriches bury their heads in the sand? Identify the principal means by which the ostrich evades a predator. **Mova's choice:** option 3 · **The right answer:** option 1 · wrong ✗ · **Who acts:** you, principal, ostrich · **What happens:** identify, mean, evade · **To what, where:** predator This is exam question 2 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/151-ostriches-and-heads-in-the-sand/#e2). ## The question {#question} ```conllu # sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e2:1 # text = Identify the principal means by which the ostrich evades a predator. 1 Identify identify VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 2 the the DET DT Definite=Def|PronType=Art 3 det _ _ 3 principal principal NOUN NN Number=Sing 4 nsubj _ _ 4 means mean VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 1 ccomp _ _ 5 by by ADP IN _ 6 case _ _ 6 which which PRON WDT PronType=Rel 9 obl _ _ 7 the the DET DT Definite=Def|PronType=Art 8 det _ _ 8 ostrich ostrich NOUN NN Number=Sing 9 nsubj _ _ 9 evades evade VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 4 parataxis _ _ 10 a a DET DT Definite=Ind|PronType=Art 11 det _ _ 11 predator predator NOUN NN Number=Sing 9 obj _ SpaceAfter=No 12 . . PUNCT . _ 1 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **identify** | imperative | you *not said here* | | | | | | vn characterize-29.2-1-1 «NP V S\_ING»: agent=Agent clause=Theme | | 2 | **mean** | present | the principal | | | | | | vn intend-61.2-1 «NP V S»: agent=Agent | | 3 | **evade** | present | the ostrich | a predator | | | | | vn avoid-52 «NP V NP.location»: agent=Agent predator=Location | 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. ## The options {#options} ### Option 1 · ✓ the right answer {#o1} Flight on foot at a velocity of approximately seventy kilometres per hour ```conllu # sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e2:o1:1 # text = Flight on foot at a velocity of approximately seventy kilometres per hour 1 Flight flight NOUN NN Number=Sing 0 root _ _ 2 on on ADP IN _ 3 case _ _ 3 foot foot NOUN NN Number=Sing 1 nmod _ _ 4 at at ADP IN _ 6 case _ _ 5 a a DET DT Definite=Ind|PronType=Art 6 det _ _ 6 velocity velocity NOUN NN Number=Sing 1 nmod _ _ 7 of of ADP IN _ 10 case _ _ 8 approximately approximately ADV RB _ 9 advmod _ _ 9 seventy seventy NUM CD NumForm=Word|NumType=Card 10 nummod _ _ 10 kilometres kilometre NOUN NNS Number=Plur 6 nmod _ _ 11 per per ADP IN _ 12 case _ _ 12 hour hour NOUN NN Number=Sing 10 nmod _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 2 {#o2} Ascent into the branches of trees ```conllu # sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e2:o2:1 # text = Ascent into the branches of trees 1 Ascent Ascent PROPN NNP Number=Sing 0 root _ _ 2 into into ADP IN _ 4 case _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 branches branch NOUN NNS Number=Plur 1 nmod _ _ 5 of of ADP IN _ 6 case _ _ 6 trees tree NOUN NNS Number=Plur 4 nmod _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 3 · ← Mova's choice {#o3} Concealment of the head beneath the surface of the ground until the predator has withdrawn ```conllu # sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e2:o3:1 # text = Concealment of the head beneath the surface of the ground until the predator has withdrawn 1 Concealment concealment NOUN NN Number=Sing 15 nsubj:pass _ _ 2 of of ADP IN _ 4 case _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 head head NOUN NN Number=Sing 1 nmod _ _ 5 beneath beneath ADP IN _ 7 case _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 surface surface NOUN NN Number=Sing 4 nmod _ _ 8 of of ADP IN _ 10 case _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ _ 10 ground ground NOUN NN Number=Sing 7 nmod _ _ 11 until until ADP IN _ 13 case _ _ 12 the the DET DT Definite=Def|PronType=Art 13 det _ _ 13 predator predator NOUN NN Number=Sing 1 nmod _ _ 14 has have AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 15 aux _ _ 15 withdrawn withdraw VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 0 root _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **withdraw** | present · perfect · passive | | Concealment of the head beneath the surface of the ground until the predator | | | | | vn remove-10.1 «NP V NP»: subject=Theme | | 2 | **conceal** | | | the head beneath the surface of the ground | | | until the predator | | nom concealment «state transitive»: of=patient until=obl | ### Option 4 {#o4} Prolonged feigning of death ```conllu # sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e2:o4:1 # text = Prolonged feigning of death 1 Prolonged prolong VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 2 amod _ _ 2 feigning feigning NOUN NN Number=Sing 0 root _ _ 3 of of ADP IN _ 4 case _ _ 4 death death NOUN NN Number=Sing 2 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **prolong** | participle | | | | | | | vn sustain-55.6 «NP V NP PP.instrument»: agent=Agent | | 2 | **feign** | | | death | | | | | nom feigning «communication transitive»: of=patient | **Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License. - ← previous: [Myth check: do ostriches bury their he…, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/e1/) - next →: [Myth check: do ostriches bury their he…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/e3/) - ↑ back to [Myth check: do ostriches bury their heads in the sand?](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/)