a young boy is rollerblading across a wide open space.
A boy in the class room.
A boy is not rollerblading if the boy is in the classroom.
exists e1 s1 s2 s3 x1 x2.(across(e1,x2) & n_space(x2) & a_open(s3) & Theme(s3,x2) & a_wide(s2) & Theme(s2,x2) & Actor(e1,x1) & v_rollerblade(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists x1 x2 x3.(n_room(x2) & of(x2,x3) & n_class(x3) & a_topic(x1) & in(x1,x2) & n_boy(x1))