(S (S (NP (NP (BASENP (NNP Mahatma) (NNP Gandhi) (POS 's)) (NN grandson)) (PRN (COMMA ,) (BASENP (NNP Arun) (NNP Manilal) (NNP Gandhi)) (COMMA ,))) (VP (VBD was) (VP (VP (VBN interviewed) (PP (IN by) (BASENP (NNP Peter) (NNP Sissons)))) (PP (IN on) (NP (BASENP (NN behalf)) (PP (IN of) (BASENP (NNP BBC) (NNP News) (NNP 24)))))))) (PERIOD .))