A guy on a bike doing a really cool trick and his friend or someone is taking a picture.
A guy was on a bike doing tricks
Using a bike to do a trick can be said to be cool.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(Theme(e2,x6) & Actor(e2,x1) & v_take(e2) & n_picture(x6) & on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & (subset_of(x7,x4) | exists x8.(subset_of(x8,x4) & n_person(x8))) & n_friend(x7) & of(x7,x1) & n_male(x1) & subset_of(x5,x4) & n_trick(x5) & a_cool(s1) & Theme(s1,x5) & r_really(x5) & (x2 = x3) & n_bike(x2) & n_guy(x1))
exists p1 x1.(exists e1 x2 x3 x4.(on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_trick(x4) & (x2 = x3) & n_bike(x2)) & n_guy(x1))