A boy and a girl playing on the beach.
Boys and girls sit in a hotel.
There is either a singular boy and a singular girl or more than one boy and more than one girl. Playing is different than sitting. A beach is different than the inside of a hotel.
exists e1 s1 x1 x2 x3 x4.(n_beach(x4) & a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_girl(x2) & subset_of(x1,s1) & n_boy(x1))
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_hotel(x4) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_girl(x3) & subset_of(x2,x1) & n_boy(x2))