(S (S (NP (BASENP (DT A) (NNP UCLA) (NN team)) (PRN (COMMA ,) (VP (VBN headed) (PP (IN by) (BASENP (NNP Brian) (NNP Naranjo)))) (COMMA ,))) (VP (VBZ has) (VP (VBN observed) (NP (NP (BASENP (DT the) (NN nuclear) (NN fusion)) (PP (IN of) (BASENP (NN deuterium) (NNS nuclei)))) (PP (IN in) (BASENP (DT a) (JJ tabletop) (NN device))))))) (PERIOD .))