premise: A senior is waiting at the window of a restaurant that serves sandwiches.
hypothesis: A person waits to be served his food.
explanation_1: A person waiting at the window of a restaurant that serves sandwiches is waiting to be served food.
explanation_2: A senior waiting is a person who waits, and somewhere that serves sandwiches will have served food.
explanation_3: A senior is a person.
premise_logic: (x)
hypothesis_logic: exists e1 p1 x1 x2.(Topic(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_wait(e1) & exists e2.(Theme(e2,x2) & v_serve(e2)) & n_food(x2) & of(x2,x1) & n_male(x1) & n_person(x1))