A solo snowboarder swooshes down a mountain leaving a cloud of powdery snow in his wake.
The snowboarder was the only one of the mountain.
A snowboarder on a mountain does not imply being the only one on the mountain.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(for(e1,e2) & in(e2,x7) & n_wake(x7) & of(x7,x1) & n_male(x1) & Theme(e2,x4) & Actor(e2,x1) & v_leave(e2) & of(x4,x5) & n_snow(x5) & of(x5,x6) & n_powdery(x6) & n_cloud(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_swoosh(e1) & n_mountain(x3) & n_snowboarder(x1) & of(x1,x2) & n_solo(x2))
exists p1 x1 x2.(n_mountain(x2) & all x3.((n_thing(x3) & card_eq_1(x3)) -> (x1 = x3)) & n_thing(x1) & card_eq_1(x1) & n_snowboarder(x1) & (x1 = x1) & of(x1,x2))