in the service of the lovers who inhabit it 
(ROOT (PP (IN in) (NP (NP (DT the) (NN service)) (PP (IN of) (NP (NP (DT the) (NNS lovers)) (SBAR (WHNP (WP who)) (S (VP (VBP inhabit) (NP (PRP it))))))))))
(ROOT (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (DT ) (NNS )) (SBAR (WHNP (WP )) (S (VP (VBP ) (NP (PRP ))))))))))