A surfer in blue rides a wave.
The surfer is female.
the surfer is not necessarily female
exists x1.(all x2.(n_wave(x2) -> exists s1 x3.(a_topic(x1) & in(x1,x3) & for(x3,x2) & n_ride(x3) & a_blue(s1) & Theme(s1,x3))) & n_surfer(x1))
exists s1 x1.(n_surfer(x1) & Theme(s1,x1) & a_female(s1))