Someone riding a bicycle is up in the air over a dirt and hill trail.
Someone went for a ride on a bicycle.
Riding a bicycle is the same as went for a ride on a bicycle.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_air(x8) & over(p1,x4) & n_trail(x6) & of(x6,x7) & n_hill(x7) & n_dirt(x5) & subset_of(x6,x4) & subset_of(x5,x4) & a_up(s1) & Manner(p1,s1) & in(x1,x8) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bicycle(x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3.(for(e1,x2) & on(x2,x3) & n_bicycle(x3) & n_ride(x2) & Actor(e1,x1) & v_go(e1) & n_person(x1))