make love a joy to behold . 
(ROOT (S (VP (VB make) (S (NP (VB love)) (NP (NP (DT a) (NN joy)) (SBAR (S (VP (TO to) (VP (VB behold)))))))) (. .)))
(ROOT (S (VP (VB ) (S (NP (VB )) (NP (NP (DT ) (NN )) (SBAR (S (VP (TO ) (VP (VB )))))))) (. )))