A man in a blue headband playing tennis.
He is a professional tennis player.
Not all tennis players are professional.
exists s1 s2 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_tennis(x2) & of(x2,x3) & n_playing(x3) & a_headband(s2) & Theme(s2,x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_male(x1) & exists s1 x2 x3.((x1 = x2) & n_player(x2) & of(x2,x3) & n_tennis(x3) & a_professional(s1) & Theme(s1,x2)))