A man is performing a water sport.
A person is near water.
A man is a person and he does water sports in water.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_sport(x2) & of(x2,x3) & n_water(x3) & n_man(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_water(x2) & a_near(s1) & Theme(s1,x2)) & n_person(x1))