TASK DEFINITION: This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
PROBLEM: Passage: In verbs, 1st person present indicative desinence is -e (∅ in verbs of the 2nd and 3rd conjugation), or -o.
E.g. parle, tem, sent (Valencian); parlo, temo, sento (Northwestern). In verbs, 1st person present indicative desinence is -o, -i or ∅ in all conjugations.
E.g. parlo (Central), parl (Balearic), parli (Northern), ('I speak'). Question: What language is parl?

SOLUTION: Balearic

PROBLEM: Passage: Chopin made his last public appearance on a concert platform at London's Guildhall on 16 November 1848, when, in a final patriotic gesture, he played for the benefit of Polish refugees. By this time he was very seriously ill, weighing under 99 pounds (i.e. less than 45 kg), and his doctors were aware that his sickness was at a terminal stage. Question: Who were the beneficiaries of his last public concert?

SOLUTION: Polish refugees.

PROBLEM: Passage: Hydrogen is the only element that has different names for its isotopes in common use today. During the early study of radioactivity, various heavy radioactive isotopes were given their own names, but such names are no longer used, except for deuterium and tritium. The symbols D and T (instead of 2H and 3H) are sometimes used for deuterium and tritium, but the corresponding symbol for protium, P, is already in use for phosphorus and thus is not available for protium. In its nomenclatural guidelines, the International Union of Pure and Applied Chemistry allows any of D, T, 2H, and 3H to be used, although 2H and 3H are preferred. Question: What are the only two names still used for radioactive isotopes?

SOLUTION:
deuterium and tritium