Customers are standing in line to buy something to eat.
There are people waiting.
customers are people. standing in line indicates that the people are waiting.
exists e1 p1 x1 x2 x3.(Topic(e1,p1) & exists e2 p2 x4.(Topic(e2,p2) & exists e3.(Actor(e3,x1) & v_eat(e3)) & Theme(e2,x4) & Actor(e2,x1) & v_buy(e2) & n_thing(x4)) & in(e1,x3) & n_line(x3) & Actor(e1,x2) & v_stand(e1) & n_customer(x2) & n_customer(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_wait(e1) & (x2 = x3) & n_people(x2))