Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
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Question: Karen O is the lead singer with which band that made a breakthrough in this decade Yeah Yeah Yeahs, Coldplay, Kings of Leon, The Killers?

Answer: yeah yeah yeahs


Question: Lester B. Pearson Airport serves which Commonwealth city?

Answer: toronto


Question: What metallic element has the highest electrical and thermal conductivity, and reflectivity?

Answer:
silver