a lone snowboarder jumpy in the air on a snowy mountain
A snowboarder is riding a bike
Someone cannot be riding a bike and also on a snowy mountain.
exists s1 s2 x1 x2 x3 x4.(n_air(x3) & a_topic(x1) & in(x1,x3) & on(x3,x4) & n_mountain(x4) & a_snowy(s2) & Theme(s2,x4) & n_jumpy(x1) & of(x1,x2) & n_snowboarder(x2) & a_lone(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_snowboarder(x1))