A man in a black wetsuit is surfing with a green surfboard.
A man is surfing.
A man with a green surfboard means there is a man surfing.
exists e1 s1 s2 x1 x2 x3.(with(e1,x3) & n_surfboard(x3) & a_green(s2) & Theme(s2,x3) & Actor(e1,x1) & v_surf(e1) & in(x1,x2) & n_wetsuit(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_surf(e1) & n_man(x1))