conversations.from: human
conversations.value: I'm completely lost with this math problem: A farmer has twice as many pigs as cows, and 4 more cows than goats.  If the farmer has 56 animals total, how many goats does he have?
  Can you give me a hand?
conversations.from: assistant
conversations.value: Let x be the number of goats
  Cows:4+x
  Pigs:2(4+x)=8+2x
  Total:x+4+x+8+2x=56
  4x+12=56
  4x=44
  x=11 goats