A man jumping in front of a mountain.
A man walking along the beach.
One cannot be walking and jumping simultaneously.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_mountain(x4) & n_front(x3) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(n_beach(x3) & a_topic(x1) & along(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_man(x1))