question: OPTIONS:
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In the absence of atmospheric oxygen (O_2), in deep geological conditions prevailing far away from Earth atmosphere, hydrogen (H_2) is produced during the process of serpentinization by the anaerobic oxidation by the water protons (H+) of the ferrous (Fe2+) silicate present in the crystal lattice of the fayalite (Fe_2SiO_4, the olivine iron-endmember).
How is hydrogen produced when there is no atmospheric oxygen?

answer: yes

[Q]: Sentence: The convention in the English language is to call nearly all national heads of government "prime minister" (sometimes modified to the equivalent term of premier), regardless of the correct title of the head of government as applied in his or her respective country. Question: What is the term for the highest position in government in Vatican City? OPTIONS:
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++++++++++
[A]: no

Q: Does "Oda Nobunaga made innovations in the fields of organization and war tactics, heavily used arquebuses, developed commerce and industry and treasured innovation." provide a valid answer to "Who used arquebuses a lot?"?
OPTIONS:
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A: yes

Problem: Does "While she almost exclusively releases English songs, Beyonce recorded several Spanish songs for Irreemplazable (re-recordings of songs from B'Day for a Spanish-language audience), and the re-release of B'Day." answer the question "Beyonce mostly releases English songs, but what other language did she release songs?" OPTIONS:
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A: yes

Does the sentence "Despite all that, the setting of the country was still in Japan and the characters were Japanese in the dub." provide a valid answer to the question "What was the main focus of the 5th season?" OPTIONS:
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A: no

Does the sentence "His youngest daughter, Eleanor, married William Marshal's son, also called William, and later the famous English rebel Simon de Montfort." provide a valid answer to the question "Who was John's eldest son?" OPTIONS:
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- no

A:
no