can draw people together across the walls that might otherwise separate them 
(ROOT (S (VP (MD can) (VP (VB draw) (NP (NNS people)) (ADVP (RB together)) (PP (IN across) (NP (NP (DT the) (NNS walls)) (SBAR (WHNP (WDT that)) (S (VP (MD might) (ADVP (RB otherwise)) (VP (VB separate) (NP (PRP them))))))))))))
(ROOT (S (VP (MD ) (VP (VB ) (NP (NNS )) (ADVP (RB )) (PP (IN ) (NP (NP (DT ) (NNS )) (SBAR (WHNP (WDT )) (S (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (PRP ))))))))))))