two surfers are riding waves in open water.
Two people are sitting on the beach watching waves pass by
One can't simultaneously sit on the beach and ride the waves.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_water(x3) & a_open(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_wave(x2) & n_surfer(x1) & card_eq_2(x1))
exists e1 e2 p1 x1 x2 x3.(n_beach(x2) & for(e1,e2) & exists e3 s1.(a_by(s1) & Manner(e3,s1) & Actor(e3,x3) & v_pass(e3)) & Recipient(e2,p1) & Actor(e2,x1) & Topic(e2,x3) & v_watch(e2) & n_wave(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))