a lone snowboarder jumpy in the air on a snowy mountain
A snowboarder is outside practicing tricks on the snow covered mountaintop
You can not infer he is practicing.
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 e2 p1 x1 x3 x4.(n_mountaintop(x3) & Theme(e2,x3) & v_cover(e2) & of(x3,x4) & n_snow(x4) & exists e1 x2.(outside(x1,x2) & on(x2,x3) & n_trick(x2) & Actor(e1,x2) & v_practice(e1)) & n_snowboarder(x1))