A young girl is swinging in a backyard.
The girl is playing alone.
A young girl is swinging in a backyard does not imply she is playing alone.
exists e1 s1 x1 x2.(in(e1,x2) & n_backyard(x2) & Actor(e1,x1) & v_swing(e1) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_girl(x1) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1))