a lone snowboarder jumping on the side of a snowy mountain.
The snowboarder is a girl
Not all snowboarders are a girl.
exists e1 s1 s2 x1 x2 x3 x4.(n_side(x3) & a_topic(x1) & on(e1,x3) & of(x3,x4) & n_mountain(x4) & a_snowy(s2) & Theme(s2,x4) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_snowboarder(x1) & a_lone(s1) & Theme(s1,x1))
exists p1 x1.(n_snowboarder(x1) & exists x2.((x1 = x2) & n_girl(x2)))