People hanging out by water.
People are swimming in the ocean.
People cannot be simultaneously hanging out by the water and swimming.
exists e1 s1 x1 x2 x3.(a_topic(x1) & by(e1,x3) & n_water(x3) & a_out(s1) & Manner(e1,s1) & Actor(e1,x2) & v_hang(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_ocean(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_people(x1))