(SINV (SINV (VP (ADVP (RB Already)) (VP (VBN confirmed) (S (VP (TO to) (VP (VB be) (VP (VBN involved) (PP (IN in) (BASENP (DT the) (NN action))))))))) (SINV (VP (VBP are)) (NP (NP (BASENP (NNP Richard) (CC and) (NNP Margaret) (NNP Collins)) (CONJP (ADVP (RB as) (RB well)) (IN as)) (BASENP (NNP Steve) (CC and) (NNP Jean) (NNP Jones))) (COMMA ,) (NP (BASENP (NNS parents)) (PP (IN of) (NP (NP (NP (BASENP (NNP Alex) (NNP Collins)) (PRN (COMMA ,) (BASENP (NN 22)) (COMMA ,))) (CC and) (NP (BASENP (NNP Bethan) (NNP Jones)) (PRN (COMMA ,) (NP (ADVP (RB also)) (BASENP (NN 22))) (COMMA ,)))) (NP (BASENP (DT an) (JJ unmarried) (JJ Welsh) (NN couple)) (SBAR (WHNP (WP who)) (S (PRN (COMMA ,) (NP (BASENP (DT a) (JJ few) (NNS days)) (PP (IN into) (BASENP (DT a) (JJ round-the-world) (NN trip)))) (COMMA ,)) (VP (VBD were) (PP (IN among) (NP (BASENP (DT the) (NN 123) (NNS passengers)) (PP (IN on) (BASENP (NN board))))))))))))))) (PERIOD .))