A man wearing goggles is swimming in a pool.
A woman wearing a snorkel is swimming in an ocean.
There can either be a man or woman.
exists e2 e1 x1 x2 x3 x4.(in(e2,x4) & n_pool(x4) & Actor(e2,x1) & v_swim(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_goggles(x3) & (x1 = x2) & n_man(x1))
exists e2 e1 x1 x2 x3 x4.(in(e2,x4) & n_ocean(x4) & Actor(e2,x1) & v_swim(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_snorkel(x3) & (x1 = x2) & n_woman(x1))