TASK DEFINITION: Based on the given question and tppic, give an answer. The answer is available on on the internet. The questions are mostly centered around a single named entity.
PROBLEM: concept: Werner Heisenberg question: what did heisenberg say about electrons?

SOLUTION: ['wolfgang ernst pauli worked with werner karl heisenberg']

PROBLEM: concept: China question: what is the official language in china?

SOLUTION: ['Nepali Language', 'Standard Tibetan', 'Chinese language', 'Zhuang languages', 'Korean Language', 'English Language', 'Esperanto Language', 'Mongolian language', 'Portuguese Language', 'Cantonese']

PROBLEM: concept: Nigeria question: what system of government does nigeria have?

SOLUTION:
Presidential system, Federal republic, Federation