Two people going through the air with there bikes.
Two people are attempting to do tricks on their bikes.
In fact that two people going through the air with there bikes does not mean they are  attempting to do tricks on their bikes.
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 p1 x1 x3.(Topic(e1,p1) & Actor(e1,x1) & v_attempt(e1) & exists e2 x2.(on(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_do(e2) & n_trick(x2)) & n_bike(x3) & of(x3,x1) & n_thing(x1) & n_people(x1) & card_eq_2(x1))