Children playing with or cleaning up miscellaneous items.
Boys tossing trash.
Not all playing includes tossing. Not all children are boys. Not all cleaning up involves trash.
(exists e1 s1 x1 x2.(with(e1,x2) & n_item(x2) & a_miscellaneous(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1)) | exists e2 s2 s3 x3 x4.(a_up(s3) & Manner(e2,s3) & Theme(e2,x4) & Actor(e2,x3) & v_clean(e2) & n_item(x4) & a_miscellaneous(s2) & Theme(s2,x4) & n_child(x3)))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_toss(e1) & n_trash(x3) & (x1 = x2) & n_boy(x1))