to the familiar topic of office politics 
(ROOT (PP (IN to) (NP (NP (DT the) (JJ familiar) (NN topic)) (PP (IN of) (NP (NN office) (NNS politics))))))
(ROOT (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN ) (NNS ))))))