Some rooms have balconies.
( ( Some rooms ) ( ( have balconies ) . ) )
(ROOT (S (NP (DT Some) (NNS rooms)) (VP (VBP have) (NP (NNS balconies))) (. .)))
Some rooms have balconies off of them.
( ( Some rooms ) ( ( have ( ( balconies off ) ( of them ) ) ) . ) )
(ROOT (S (NP (DT Some) (NNS rooms)) (VP (VBP have) (VP (VBN balconies) (PRT (RP off)) (PP (IN of) (NP (PRP them))))) (. .)))