(S (S (PP (IN On) (BASENP (NNP Sunday))) (COMMA ,) (S (BASENP (NNP Wikinews)) (VP (VP (VBD contacted) (NP (BASENP (NNP BP)) (PRN (COMMA ,) (SBAR (WHNP (WP who)) (S (VP (VBD authenticated) (BASENP (DT the) (NN video))))) (COMMA ,)))) (CC and) (VP (VBD asked) (SBAR (IN if) (S (BASENP (DT any) (NNPS ROVs)) (VP (VBD were) (VP (VP (VP (VP (VBN sent) (ADVP (RB back))) (PP (TO to) (NP (DT the) (NP (BASENP (NN crack)) (CC and) (BASENP (NN leak) (NN location)))))) (PP (IN on) (BASENP (NNP June) (NN 13)))) (PP (IN for) (BASENP (JJ further) (NN investigation))))))))))) (PERIOD .))