emotions can draw people together across the walls that might otherwise separate them 
(ROOT (S (NP (NNS emotions)) (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 (NP (NNS )) (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 ))))))))))))