( ( This backbone ) ( also ( ( connects ( all ( of ( our ( main routers ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT This) (NN backbone)) (ADVP (RB also)) (VP (VBZ connects) (NP (NP (DT all)) (PP (IN of) (NP (PRP$ our) (JJ main) (NNS routers))))) (. .)))
This backbone also connects all of our main routers .
(ROOT (S (NP (NP (CD One)) (PP (IN of) (NP (NP (DT the) (JJ main) (NNS features)) (SBAR (S (NP (DT all) (NNS vetebrates)) (VP (VBP have) (VP (PP (IN in) (NP (JJ common)))))))))) (VP (VBZ is) (NP (DT a) (NN backbone))) (. .)))