A young girl plays outside.
The boy is in his bed.
One cannot be both a boy and a girl.
exists e1 s1 s2 x1.(a_outside(s2) & Manner(e1,s2) & Actor(e1,x1) & v_play(e1) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_bed(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & in(x1,x2))