answer: Ralph and Jennie are having a stomachache. They recall what they ate and they find out it's the apples that weren't washed.
documents: #Person1#: Ralph, my stomach aches.
  #Person2#: Mine too, honey.
  #Person1#: I think it was the fish or the meat we ate in the restaurant.
  #Person2#: It might have been.
  #Person1#: Or the soup.
  #Person2#: No, it couldn't have been the soup. Because I didn't have any. Little Jimmy had some and he's alright.
  #Person1#: Of course, we sat in the sun for a long time, but I suppose it couldn't have been the sun.
  #Person2#: That's true. Now what else did we both eat? Only those lovely apples I bought at the market. It could have been them. We used to eating apples and you wash them.
  #Person1#: No, I didn't. I thought you have.
  #Person2#: Jennie, I didn't wash them. I was sure you did. It must have been the apples then. Oh, I feel worse now. Let's go see a doctor.