Three men biking on a road with many people.
The people are swimming at the beach.
biking is contradictory to swimming
exists e1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_people(x4) & n_quantity(x4) & on(e1,x3) & n_road(x3) & Actor(e1,x2) & v_bike(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_beach(x2) & n_people(x1) & at(e1,x2) & Actor(e1,x1) & v_swim(e1))