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.
Q: Context: Today I met Vo Ban Tam, a former VC enemy who farms shrimp and crab on the same #Mekong river we once fought over. John Kerry (@JohnKerry) January 14, 2017 Answer: shrimp and crab
A:
what type of farm does vo ban tam have?