A man on a white waterskiing ramp on a lake
A man is skiing.
Not all skiing is on water.
exists s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & on(x2,x4) & n_lake(x4) & n_ramp(x2) & of(x2,x3) & n_waterskiing(x3) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_skiing(x2)) & n_man(x1))