People laughing while at a restaurant.
People laughing indoors.
many restaurants have seating both indoors and outdoors.
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_restaurant(x3) & r_while(e1) & Actor(e1,x2) & v_laugh(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_laugh(e1) & n_indoor(x3) & (x1 = x2) & n_people(x1))