In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

Context: .@ManUtd Thanks guys! Looking forward to this new adventure. Gracias! Emocionado con esta nueva aventura Juan Mata Garcia (@juanmata10) January 25, 2014 Answer: @manutd
who said 'thanks guys'?