who possibly will enjoy it 
(ROOT (SBAR (WHNP (WP who)) (S (ADVP (RB possibly)) (VP (MD will) (VP (VB enjoy) (NP (PRP it)))))))
(ROOT (SBAR (WHNP (WP )) (S (ADVP (RB )) (VP (MD ) (VP (VB ) (NP (PRP )))))))