(S (S (S (VP (VBG Assuming) (SBAR (IN that) (S (NP (BASENP (DT the) (NN size) (CC and) (NN distribution)) (PP (IN of) (BASENP (DT the) (NNS clouds)))) (VP (VBP are) (ADJP (JJ representative))))))) (COMMA ,) (S (BASENP (NNP Nicastro) (CC and) (NNS colleagues)) (VP (VP (VBD made) (NP (BASENP (DT the) (JJ first) (JJ reliable) (NN estimate)) (PP (IN of) (NP (BASENP (JJ average) (NN density)) (PP (IN of) (NP (BASENP (NNS baryons)) (PP (IN in) (NP (BASENP (DT such) (NNS clouds)) (PP (IN throughout) (BASENP (DT the) (NNP Universe))))))))))) (COMMA ,) (S (VP (VBG finding) (S (BASENP (PRP it)) (ADJP (JJ consistent) (PP (IN with) (NP (BASENP (DT the) (JJ mass) (NN density)) (PP (IN of) (BASENP (DT the) (JJ missing) (NNS baryons)))))))))))) (PERIOD .))