answer: Dad asks Jenny to watch out for cars and strangers.
documents: #Person1#: Watch out, Jenny! Be careful of the cars.
  #Person2#: I'm fine, dad.
  #Person1#: Did you get hit?
  #Person2#: No, dad. Can I go there to play ball?
  #Person1#: Watch out for strangers, and don't go too far away. Alright?