A man jumping his bicycle off dirt mounds is several feet in the air.
A man is performing in BMX.
A man jumping a bicycle off dirt mounds cannot be assumed to be performing in BMX.
exists e1 p1 x1 x2 x3 x4 x5 x7.(n_air(x7) & exists s1 x6.((x1 = x6) & in(x6,x7) & n_foot(x6) & a_several(s1) & Theme(s1,x6)) & off(e1,x4) & n_mound(x4) & of(x4,x5) & n_dirt(x5) & Theme(e1,x3) & Actor(e1,x2) & v_jump(e1) & n_bicycle(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(ne_geo_bmx(x2) & in(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_man(x1))