A man wearing goggles is swimming in a pool.
A man performing in the olympics.
Just because the man is swimming in a pool wearing goggles doesn't necessarily mean he is performing in the Olympics.
exists e1 e2 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 e1 x1 x2 x3.(n_olympics(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1))