dialogue: Arnoldo: I heard something terrible happen to your son last weekend.
  Mr. Henry: Yes, my family went swimming with Mr. Henry and his son last Saturday. When we got there, my wife and I started looking for a nice spot near the pool. My son ran off by himself and went over to the pool. The next thing we knew, he was in the water.
  Arnoldo: Can he swim?
  Mr. Henry: No, he can't. We told him to stay in the shallow part of the pool, but he slipped into the deep part of the pool by accident.
  Arnoldo: That's horrible. Did anyone notice what was happening?
  Mr. Henry: Yes, lucklily Henry was nearby and immediately realized that he was drowning. Henry has taken some swimming lessons. So he knew right away that my son was in danger.
  Arnoldo: You must have been in shock when you found out what was happening.
  Mr. Henry: Yes, we were so frightened. We'd originally planned to swim there for an hour, but after that, we left in a hurry.
summary: Mr. Henry tells Arnoldo about the terrible accident last weekend. Mr. Henry went swimming with Mr. Henry. Mr. Henry's son who couldn't swim drowned in the pool and Mr. Henry saved him.