<s>[INST] Bob has two sons. John and Jay. Jay has one brother and father. The father has two sons.
Jay's brother has a brother and a father. Who is Jay's brother. [/INST] Jay's brother is John.</s>\ <s>[INST] Great, that was fast, can you illustrate the solution. [/INST] Here is an illustrated family tree:
        Bob
      /       \
Jay         John</s>