--- title: Why do two equal lines in the Müller-Lyer illusion look different? — Kind jokes, teasing, pranks, April Foo… · tree and pragmatics description: Why do two equal lines in the Müller-Lyer illusion look different? Test 5 · ★ of lesson 313 «Kind jokes, teasing, pranks, April Fools, illusions and adverts» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/everyday/313-kind-jokes-pranks-april-fools-and-adverts/t5/) [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/) / [Everyday](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/) / [Kind jokes, teasing, pranks, April Foo…](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/313-kind-jokes-pranks-april-fools-and-adverts/) / t5 # Test 5 · ★ · Kind jokes, teasing, pranks, April Fools, illusions and ad… Why do two equal lines in the Müller-Lyer illusion look different? **Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** two equal lines · **What happens:** look This is test 5 · ★ of lesson 313 «Kind jokes, teasing, pranks, April Fools, illusions and adverts» of the everyday 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/everyday/313-kind-jokes-pranks-april-fools-and-adverts/#t5). ## The question {#question} ```conllu # sent_id = question:everyday:313-kind-jokes-pranks-april-fools-and-adverts:t5:1 # text = Why do two equal lines in the Müller-Lyer illusion look different? 1 Why why ADV WRB PronType=Int 12 advmod _ _ 2 do do AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 12 aux _ _ 3 two two NUM CD NumForm=Word|NumType=Card 5 nummod _ _ 4 equal equal ADJ JJ Degree=Pos 5 amod _ _ 5 lines line NOUN NNS Number=Plur 12 nsubj _ _ 6 in in ADP IN _ 11 case _ _ 7 the the DET DT Definite=Def|PronType=Art 11 det _ _ 8 Müller Müller PROPN NNP Number=Sing 10 compound _ SpaceAfter=No 9 - - PUNCT HYPH _ 8 punct _ SpaceAfter=No 10 Lyer Lyer PROPN NNP Number=Sing 11 compound _ _ 11 illusion illusion NOUN NN Number=Sing 5 nmod _ _ 12 look look VERB VB VerbForm=Inf 0 root _ _ 13 different different ADJ JJ Degree=Pos 12 xcomp _ SpaceAfter=No 14 ? ? PUNCT . _ 12 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **look** | present · do-support | two equal lines in the Lyer illusion | | | | | different *property* | vn stimulus\_subject-30.4 «NP V ADJ»: agent=Stimulus | 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} Your eyes need glasses to see them ```conllu # sent_id = question:everyday:313-kind-jokes-pranks-april-fools-and-adverts:t5:o1:1 # text = Your eyes need glasses to see them 1 Your your PRON PRP$ Case=Gen|Person=2|Poss=Yes|PronType=Prs 2 nmod:poss _ _ 2 eyes eye NOUN NNS Number=Plur 3 nsubj _ _ 3 need need VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 glasses glass NOUN NNS Number=Plur 3 obj _ _ 5 to to PART TO _ 6 mark _ _ 6 see see VERB VB VerbForm=Inf 3 xcomp _ _ 7 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 6 obj _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **need** | present | Your eyes | glasses | | | | | tree rules | | 2 | **see** *not said to happen* | to-infinitive | glasses *not said here* | glasses *= glass* | | | | | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer they=Stimulus | ### Option 2 {#o2} The paper stretches one line ```conllu # sent_id = question:everyday:313-kind-jokes-pranks-april-fools-and-adverts:t5:o2:1 # text = The paper stretches one line 1 The the DET DT Definite=Def|PronType=Art 2 det _ _ 2 paper paper NOUN NN Number=Sing 3 nsubj _ _ 3 stretches stretch VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 one one NUM CD NumForm=Word|NumType=Card 5 nummod _ _ 5 line line NOUN NN Number=Sing 3 obj _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **stretch** | present | the paper | one line | | | | | vn bend-45.2 «NP V NP.patient»: agent=Agent line=Patient | ### Option 3 · ← Mova's choice · ✓ the right answer {#o3} The arrow ends fool the brain about their length ```conllu # sent_id = question:everyday:313-kind-jokes-pranks-april-fools-and-adverts:t5:o3:1 # text = The arrow ends fool the brain about their length 1 The the DET DT Definite=Def|PronType=Art 2 det _ _ 2 arrow arrow NOUN NN Number=Sing 3 nsubj _ _ 3 ends end VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 fool fool NOUN NN Number=Sing 3 obj _ _ 5 the the DET DT Definite=Def|PronType=Art 6 det _ _ 6 brain brain NOUN NN Number=Sing 3 obj _ _ 7 about about ADP IN _ 9 case _ _ 8 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 9 nmod:poss _ _ 9 length length NOUN NN Number=Sing 6 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **end** | present | the arrow | fool | | | | | tree rules | ### Option 4 {#o4} One of the lines really is longer, by a tiny bit ```conllu # sent_id = question:everyday:313-kind-jokes-pranks-april-fools-and-adverts:t5:o4:1 # text = One of the lines really is longer, by a tiny bit 1 One one NUM CD NumForm=Word|NumType=Card 0 root _ _ 2 of of ADP IN _ 4 case _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 lines line NOUN NNS Number=Plur 1 nmod _ _ 5 really really ADV RB _ 7 advmod _ _ 6 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 cop _ _ 7 longer long ADJ JJR Degree=Cmp 4 acl:relcl _ SpaceAfter=No 8 , , PUNCT , _ 12 punct _ _ 9 by by ADP IN _ 12 case _ _ 10 a a DET DT Definite=Ind|PronType=Art 12 det _ _ 11 tiny tiny ADJ JJ Degree=Pos 12 amod _ _ 12 bit bit NOUN NN Number=Sing 7 obl _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is** | present | the lines *not said here* | | | | | by a tiny bit; long *property* | tree rules | **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: [Kind jokes, teasing, pranks, April Foo…, test 4](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/313-kind-jokes-pranks-april-fools-and-adverts/t4/) - next →: [Kind jokes, teasing, pranks, April Foo…, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/313-kind-jokes-pranks-april-fools-and-adverts/t6/) - ↑ back to [Kind jokes, teasing, pranks, April Fools, illusions and adverts](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/313-kind-jokes-pranks-april-fools-and-adverts/)