--- title: My friend says a bike stays up cos the wheels spin like a top. right? — Riding a bike: why it stays up · tree and pragmatics description: My friend says a bike stays up cos the wheels spin like a top. right? Test 1 · ★★ of lesson 9 «Riding a bike: why it stays up» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/physics/9-riding-a-bike/t1/) [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/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/questions/physics/) / [Riding a bike: why it stays up](https://md.mova.elamur.ai/free/en/corpora/questions/physics/9-riding-a-bike/) / t1 # Test 1 · ★★ · Riding a bike: why it stays up My friend says a bike stays up cos the wheels spin like a top. right? **Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** friend, bike, wheels · **What happens:** say, stay up, spin · **Speech:** someone speaks here This is test 1 · ★★ of lesson 9 «Riding a bike: why it stays up» of the physics course of Mova's primary school. 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/physics/9-riding-a-bike/#t1). ## The question {#question} ```conllu # sent_id = question:physics:9-riding-a-bike:t1:1 # text = My friend says a bike stays up cos the wheels spin like a top. right? 1 My my PRON PRP$ Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs 2 nmod:poss _ _ 2 friend friend NOUN NN Number=Sing 3 nsubj _ _ 3 says say VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 a a DET DT Definite=Ind|PronType=Art 5 det _ _ 5 bike bike NOUN NN Number=Sing 6 nsubj _ _ 6 stays stay VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 3 ccomp _ _ 7 up up ADP RP _ 6 compound:prt _ _ 8 cos cos SCONJ IN _ 11 mark _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ _ 10 wheels wheel NOUN NNS Number=Plur 11 nsubj _ _ 11 spin spin VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 6 advcl _ _ 12 like like ADP IN _ 14 case _ _ 13 a a DET DT Definite=Ind|PronType=Art 14 det _ _ 14 top top NOUN NN Number=Sing 11 obl _ SpaceAfter=No 15 . . PUNCT . _ 3 punct _ _ 16 right right ADV RB _ 3 advmod _ SpaceAfter=No 17 ? ? PUNCT . _ 3 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **say** *speech: assert* | present | My friend | | | | | right *property* | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic | | 2 | **stay up** | present | a bike | | | | | | vn exist-47.1 «NP V»: agent=Theme | | 3 | **spin** | present | the wheels | | | | | like a top | vn roll-51.3.1 «NP.theme V»: agent=Theme | 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 {#o1} Yes, that is the one magic trick ```conllu # sent_id = question:physics:9-riding-a-bike:t1:o1:1 # text = Yes, that is the one magic trick 1 Yes yes INTJ UH Polarity=Pos 8 discourse _ SpaceAfter=No 2 , , PUNCT , _ 1 punct _ _ 3 that that PRON DT Number=Sing|PronType=Dem 8 nsubj _ _ 4 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 8 cop _ _ 5 the the DET DT Definite=Def|PronType=Art 8 det _ _ 6 one one NOUN NN Number=Sing 7 compound _ _ 7 magic magic NOUN NN Number=Sing 8 compound _ _ 8 trick trick NOUN NN Number=Sing 0 root _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is a** | present | that | the magic trick | | | | | tree rules | ### Option 2 {#o2} No, it is the air in the tyres ```conllu # sent_id = question:physics:9-riding-a-bike:t1:o2:1 # text = No, it is the air in the tyres 1 No no INTJ UH Polarity=Neg 6 discourse _ SpaceAfter=No 2 , , PUNCT , _ 1 punct _ _ 3 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 6 nsubj _ _ 4 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 6 cop _ _ 5 the the DET DT Definite=Def|PronType=Art 6 det _ _ 6 air air NOUN NN Number=Sing 0 root _ _ 7 in in ADP IN _ 9 case _ _ 8 the the DET DT Definite=Def|PronType=Art 9 det _ _ 9 tyres tyre NOUN NNS Number=Plur 6 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is a** | present | it | the air | | the tyres | | | tree rules | ### Option 3 {#o3} Yes, it is only the spinning ```conllu # sent_id = question:physics:9-riding-a-bike:t1:o3:1 # text = Yes, it is only the spinning 1 Yes yes INTJ UH Polarity=Pos 7 discourse _ SpaceAfter=No 2 , , PUNCT , _ 1 punct _ _ 3 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 7 nsubj _ _ 4 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 cop _ _ 5 only only ADV RB _ 7 advmod _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 spinning spinning NOUN NN Number=Sing 0 root _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is a** | present | it | the spinning | | | | | tree rules | ### Option 4 · ← Mova's choice · ✓ the right answer {#o4} Not really, it is mostly steering and the bike's shape ```conllu # sent_id = question:physics:9-riding-a-bike:t1:o4:1 # text = Not really, it is mostly steering and the bike's shape 1 Not not PART RB Polarity=Neg 7 advmod _ _ 2 really really ADV RB _ 7 advmod _ SpaceAfter=No 3 , , PUNCT , _ 7 punct _ _ 4 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 7 nsubj _ _ 5 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 aux _ _ 6 mostly mostly ADV RB _ 7 advmod _ _ 7 steering steer VERB VBG Tense=Pres|VerbForm=Part 0 root _ _ 8 and and CCONJ CC _ 12 cc _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ _ 10 bike bike NOUN NN Number=Sing 12 nmod:poss _ SpaceAfter=No 11 's 's PART POS _ 10 case _ _ 12 shape shape NOUN NN Number=Sing 7 conj _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **not** **steer** | present · progressive | it | | | | | mostly *property* | vn accompany-51.7 «NP V NP»: agent=Agent | **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: [Balance: the centre of gravity, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/physics/8-balance-the-centre-of-gravity/e4/) - next →: [Riding a bike: why it stays up, test 2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/9-riding-a-bike/t2/) - ↑ back to [Riding a bike: why it stays up](https://md.mova.elamur.ai/free/en/corpora/questions/physics/9-riding-a-bike/)