answer: Mary will join #Person1# to the supermarket. #Person1# tells her Lisa's getting coupons.
documents: #Person1#: Mary, we're going to the supermarket. Do you want to come?
  #Person2#: Yeah. I need to get some stuff.
  #Person1#: Let's all go together then.
  #Person2#: Where's Lisa?
  #Person1#: She's getting coupons from her desk.
  #Person2#: What are coupons?
  #Person1#: They give you discounts on some stuff that you want to buy.
  #Person2#: Really?
  #Person1#: Because there is a coupon for almost every product, we always bring coupons on our shopping trips.