answer: #Person2# tells #Person1# they'll drive to the seaside. #Person1# wants to help pay for the gas. #Person2# agrees and asks #Person1# to pay a third.
documents: #Person1#: Will we drive to the seaside?
  #Person2#: Yes, it will take about four hours. We can leave about noon and get there by supper time.
  #Person1#: Let me help pay for gas.
  #Person2#: All right. There will be three of us going so we will each pay a third.
  #Person1#: What other expenses will we have?
  #Person2#: There won't be many other expenses expect food.