A little boy is watching a little girl in white ride her bike by trees.
The children are outside.
A boy and a girl can be collectively termed as children.
exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5.(by(e1,x5) & n_tree(x5) & in(e1,x3) & n_bike(x3) & a_her(s4) & Theme(s4,x3) & of(x3,x4) & n_ride(x4) & a_white(s3) & Theme(s3,x3) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_girl(x2) & a_little(s2) & Theme(s2,x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists s1 x1.(n_child(x1) & Theme(s1,x1) & a_outside(s1))