about friendship , love , and the truth 
(ROOT (PP (IN about) (NP (NP (NN friendship)) (, ,) (NP (NN love)) (, ,) (CC and) (NP (DT the) (NN truth)))))
(ROOT (PP (IN ) (NP (NP (NN )) (, ) (NP (NN )) (, ) (CC ) (NP (DT ) (NN )))))