--- title: Identify the substance whose presence in exhaled breath causes lime… — Gases all around: breath and balloons · tree and pragmatics description: Identify the substance whose presence in exhaled breath causes lime water to become milky. Exam question 1 of lesson 20 «Gases all around: breath and balloons» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/chemistry/20-gases-all-around-breath-and-balloons/e1/) [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/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/) / [Gases all around: breath and balloons](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/20-gases-all-around-breath-and-balloons/) / e1 # Exam question 1 · Gases all around: breath and balloons Identify the substance whose presence in exhaled breath causes lime water to become milky. **Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, substance · **What happens:** identify, exhale, cause, become · **To what, where:** lime water This is exam question 1 of lesson 20 «Gases all around: breath and balloons» of the chemistry 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/chemistry/20-gases-all-around-breath-and-balloons/#e1). ## The question {#question} ```conllu # sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:e1:1 # text = Identify the substance whose presence in exhaled breath causes lime water to become milky. 1 Identify identify VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 2 the the DET DT Definite=Def|PronType=Art 3 det _ _ 3 substance substance NOUN NN Number=Sing 9 nsubj _ _ 4 whose whose PRON WP$ Poss=Yes|PronType=Rel 5 nmod:poss _ _ 5 presence presence NOUN NN Number=Sing 9 nsubj _ _ 6 in in ADP IN _ 8 case _ _ 7 exhaled exhale VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 8 amod _ _ 8 breath breath NOUN NN Number=Sing 5 nmod _ _ 9 causes cause VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 1 parataxis _ _ 10 lime lime NOUN NN Number=Sing 11 compound _ _ 11 water water NOUN NN Number=Sing 9 obj _ _ 12 to to PART TO _ 13 mark _ _ 13 become become VERB VB VerbForm=Inf 9 advcl _ _ 14 milky milky ADJ JJ Degree=Pos 13 xcomp _ SpaceAfter=No 15 . . PUNCT . _ 1 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **identify** | imperative | you *not said here* | | | | | | vn empathize-88.2 «NP V»: agent=Experiencer | | 2 | **exhale** | participle | | | | | | | vn exhale-40.1.3-1 «NP V»: agent=Agent | | 3 | **cause** | present | the substance | lime water | | | | | vn engender-27.1-1 «NP V NP»: agent=Precondition water=Patient | | 4 | **become** | to-infinitive | the substance *not said here* | | | | | milky *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=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. ## The options {#options} ### Option 1 · ← Mova's choice {#o1} Nitrogen ```conllu # sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:e1:o1:1 # text = Nitrogen 1 Nitrogen Nitrogen PROPN NNP Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 2 {#o2} Helium ```conllu # sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:e1:o2:1 # text = Helium 1 Helium helium NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 3 · ✓ the right answer {#o3} Carbon dioxide ```conllu # sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:e1:o3:1 # text = Carbon dioxide 1 Carbon carbon NOUN NN Number=Sing 2 compound _ _ 2 dioxide dioxide NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 4 {#o4} Oxygen ```conllu # sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:e1:o4:1 # text = Oxygen 1 Oxygen oxygen NOUN NN Number=Sing 0 root _ _ ``` The frames reader finds no event or fact in this sentence. **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: [Gases all around: breath and balloons, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/20-gases-all-around-breath-and-balloons/t11/) - next →: [Gases all around: breath and balloons, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/20-gases-all-around-breath-and-balloons/e2/) - ↑ back to [Gases all around: breath and balloons](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/20-gases-all-around-breath-and-balloons/)