answer: #Person1# tells #Person2# that #Person1# has a time problem in the US because Americans usually show up about 20 or 30 minutes later than the appointed time.
documents: #Person1#: I hear you just got back from Brazil. Did you enjoy yourself?
  #Person2#: Yes, I had a wonderful time.
  #Person1#: Really? Well, speaking of time, actually, I had a time problem here in the US. I was invited to my professor's house. He said to come at 7:00. I arrived at about 7:10 but I guess it was a little early.
  #Person2#: Why? What did your professor say?
  #Person1#: He didn't say anything. He was still in the shower. His wife opened the door.
  #Person2#: So they were still getting ready? Well, Americans usually show up at a party about 20 or 30 minutes late. But you weren't too early.