(S (S (S (NP (BASENP (DT The) (JJR greater) (NN modularity) (CC and) (NN abstraction)) (PP (IN of) (BASENP (DT a) (NN microkernel) (NN approach)))) (VP (VBZ means) (SBAR (IN that) (S (S (NP (BASENP (DT the) (NN microkernel)) (BASENP (PRP itself))) (VP (VP (VBZ does) (RB not)) (VP (VB need) (BASENP (JJ constant) (NN modification))))) (SBAR (IN as) (S (VP (VBZ is) (VP (VP (VBN seen) (PP (IN in) (BASENP (DT the) (NNP Linux) (NN kernel)))) (BASENP (NN today)))))))))) (COMMA ,) (SBAR (IN since) (S (BASENP (PRP it)) (VP (VP (VBZ provides) (NP (BASENP (RB only) (DT the) (JJ very) (NN minimum)) (PP (IN of) (BASENP (NNS services))))) (CONJP (COMMA ,) (CC and)) (VP (VP (VBZ does) (ADVP (RB so))) (ADVP (RB very) (RB carefully))))))) (PERIOD .))