A person in a backyard is jumping in the air.
The person is outside.
A backyard is outside. Therefore if the person is in a backyard, they must be outside.
exists e1 x1 x2 x3.(n_air(x3) & in(e1,x3) & Actor(e1,x1) & v_jump(e1) & in(x1,x2) & n_backyard(x2) & n_person(x1))
exists s1 x1.(n_person(x1) & Theme(s1,x1) & a_outside(s1))