The snowboarder gets serious air.
The snowboarder is in the hospital.
He can't be in the air and at the hospital at the same time.
exists e1 s1 x1 x2.(n_snowboarder(x1) & Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_air(x2) & a_serious(s1) & Theme(s1,x2))
exists p1 x1 x2.(n_hospital(x2) & n_snowboarder(x1) & in(x1,x2))