One child helps another go head first down a blue slide.
Both children go head first on the slide.
Just because one child helps another go head first down a slide it doesn't mean that is the cause of both of them going head first down a slide and the slide doesn't necessarily have to be blue.
exists e1 p1 x1 x2.(exists e2 s1 s2 x3 x4.(down(e2,x4) & n_slide(x4) & a_blue(s2) & Theme(s2,x4) & a_first(s1) & Manner(e2,s1) & Theme(e2,x3) & Actor(e2,x2) & v_go(e2) & n_head(x3)) & Recipient(e1,p1) & Actor(e1,x1) & Topic(e1,x2) & v_help(e1) & n_thing(x2) & n_child(x1) & card_eq_1(x1))
exists e1 s1 x1 x2 x3.(n_slide(x3) & n_child(x1) & on(e1,x3) & a_first(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_head(x2))