Two people going through the air with there bikes.
Two people are riding their bikes in the air.
Going through the air with their bikes is a rephrasing of riding their bikes in the air.
exists e1 s1 x1 x2 x3 x4.(n_air(x4) & a_topic(x1) & for(e1,s1) & Theme(s1,x2) & a_there(s1) & through(e1,x4) & with(e1,x3) & n_bike(x3) & Actor(e1,x2) & v_go(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_air(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_2(x1))