Male surfer in the process of riding a wave.
The man is trying to win a surfing competition.
Not all male surfers riding waves are trying to win a surfing competition
exists e1 x1 x2 x3 x4 x5.(n_process(x3) & a_topic(x1) & in(x1,x3) & Theme(e1,x5) & Actor(e1,x4) & v_ride(e1) & n_wave(x5) & (x3 = x4) & n_surfer(x1) & (x1 = x2) & ne_nam_male(x2))
exists e1 p1 x1.(n_man(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 s1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_win(e2) & n_competition(x2) & a_surfing(s1) & Theme(s1,x2)))