BMXer in the air with motion blur on the forest background.
A BMXer launches themselves themselves over a twenty foot ramp.
It can't be inferred that the BMXer is in the air over a twenty foot ramp.  He could be in the air over over objects
exists s1 x1 x2 x3 x4 x5.(n_background(x4) & of(x4,x5) & n_forest(x5) & n_air(x1) & ne_org_bmxer(s1) & a_topic(s1) & in(s1,x1) & on(x1,x4) & with(x1,x2) & n_blur(x2) & of(x2,x3) & n_motion(x3))
exists e1 x1 x2 x3 x4 x5.(n_group(x3) & n_group(x2) & over(e1,x4) & n_ramp(x4) & of(x4,x5) & n_foot(x5) & card_eq_20(x4) & Recipient(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_launch(e1) & ne_org_bmxer(x1))