(S (S (SBAR (IN While) (S (NP (EX there)) (VP (VBZ is) (NP (NP (BASENP (DT no) (JJ existing) (NN record)) (PP (IN with) (BASENP (NNP Guinness)))) (PP (IN for) (NP (BASENP (JJ alive) (NNS couples)) (PP (IN with) (BASENP (DT the) (JJ most) (NNS grandchildren))))))))) (COMMA ,) (S (BASENP (NNP Guinness) (NNP World) (NNPS Records) (NNS authorities)) (VP (VBP say) (SBAR (S (BASENP (DT the) (NN couple)) (VP (ADVP (RB very) (RB well)) (VP (MD might) (VP (VB hold) (BASENP (DT the) (NN record)))))))))) (PERIOD .))