(S (S (NP (BASENP (JJ Initial) (NN research)) (PP (IN by) (NP (BASENP (NNP Dr.) (NNP Anthony) (NNP F.) (NNP Bogaert)) (CC and) (NP (BASENP (PRPD his) (NNS colleagues)) (PP (IN at) (NP (BASENP (NNP Brock) (NNP University)) (COMMA ,) (BASENP (NNP Ontario)))))))) (VP (VBD revealed) (NP (BASENP (DT a) (JJ possible) (NN link)) (PP (IN between) (NP (NP (BASENP (DT the) (NN number)) (PP (IN of) (NP (BASENP (JJS elder) (NNS brothers)) (SBAR (S (BASENP (DT a) (NN boy)) (VP (VBZ has))))))) (CC and) (NP (BASENP (DT the) (NN likelihood)) (SBAR (S (BASENP (PRP he)) (VP (VBZ is) (S (VP (TO to) (VP (VB be) (BASENP (NN gay)))))))))))))) (PERIOD .))