A snowboarder grabbing the snowboard while in the air on a snowy mountain.
A snowboarder grabbing the snowboard and walking toward the lift.
The snowboarder cannot grab the snowboard while in the air at the same time as grabbing the snowboard and walking.
exists e1 s1 x1 x2 x3 x4 x5.(n_air(x4) & n_snowboard(x3) & a_topic(x1) & on(e1,x5) & n_mountain(x5) & a_snowy(s1) & Theme(s1,x5) & in(e1,x4) & r_while(e1) & Theme(e1,x3) & Actor(e1,x2) & v_grab(e1) & (x1 = x2) & n_snowboarder(x1))
exists e1 x1 x2 x3 x4 x5 x6.(n_lift(x6) & n_walking(x5) & n_snowboard(x4) & subset_of(x5,x3) & subset_of(x4,x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_grab(e1) & toward(x3,x6) & (x1 = x2) & n_snowboarder(x1))