question: If you really want my identity,  You can unlock my name with a key.    A tree swing is my favorite toy,  Yet I'm neither little girl or boy.    I am no coin with my head and tail,  Yet I may spend time in a bar-locked jail.    I cannot speak or read or fly,  But I'll ask you this: What am I?
choices.label: A B C D E
choices.text: part novel inheritance monkey fluke