A little boy in a black shirt is holding a red guitar.
A little girl is playing with a doll.
One can not be both a boy and a girl. A toy can not be both a guitar and a doll.
exists e1 s1 s2 s3 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_guitar(x3) & a_red(s3) & Theme(s3,x3) & in(x1,x2) & n_shirt(x2) & a_black(s2) & Theme(s2,x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(with(e1,x2) & n_doll(x2) & Actor(e1,x1) & v_play(e1) & n_girl(x1) & a_little(s1) & Theme(s1,x1))