A cyclist is optimistic as he rushes through the air while on his BMX bike at a bicycle event.
A snowboarder flies through the air
a cyclist refers to one who operates a bicycle, a snowboarder is one who rides a board on snow.
exists p1 s1 x1 x2 x3 x4.(n_air(x2) & exists e1 x1 x5 x6.(at(e1,x5) & n_event(x5) & of(x5,x6) & n_bicycle(x6) & on(e1,x3) & n_male(x1) & r_while(e1) & through(e1,x2) & Actor(e1,x1) & v_rush(e1)) & n_bike(x3) & (x3 = x4) & ne_org_bmx(x4) & of(x3,x1) & n_male(x1) & as(s1,p1) & Theme(s1,x1) & a_optimistic(s1) & n_cyclist(x1))
exists e1 x1 x2.(n_air(x2) & through(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_snowboarder(x1))