Two smiling climbers with poles sit astride a mountain ridge.
The couple are sitting in a hospital waiting room.
The couple can't be in a mountain ridge and in a hospital waiting room
exists e1 e2 x1 x2 x3 x4.(astride(e2,x3) & n_ridge(x3) & of(x3,x4) & n_mountain(x4) & Actor(e2,x1) & v_sit(e2) & with(x1,x2) & n_pole(x2) & n_climber(x1) & Actor(e1,x1) & v_smile(e1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3.(n_couple(x1) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wait(e2) & n_room(x3) & in(e1,x2) & n_hospital(x2) & Actor(e1,x1) & v_sit(e1))