A small boy in a polo is playing with twin baby girls while another little boy is playing alone.
The little boy isn't related to the other children.
little boy playing alone doesn't mean they are not related
exists e1 p1 s1 s2 s3 x1 x2 x3 x4.(exists e2 s4 s5 x5.(a_alone(s5) & Manner(e2,s5) & Actor(e2,x5) & v_play(e2) & n_boy(x5) & a_little(s4) & Theme(s4,x5) & -(x5 = x1)) & n_boy(x1) & n_boy(x1) & a_little(s3) & Theme(s3,x1) & while(e1,p1) & with(e1,x3) & n_girl(x3) & of(x3,x4) & n_baby(x4) & a_twin(s2) & Theme(s2,x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_polo(x2) & a_small(s1) & Theme(s1,x1))
exists s1 x1 x2.(-(x2 = x2) & n_child(x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1) & -exists e1.(to(e1,x2) & Theme(e1,x1) & v_relate(e1)))