(S (S (S (NP (NP (NNS Teenagers) (BASENP (NNP Irma) (CC and) (NNP David) (NNP Soyos))) (CC and) (NP (BASENP (PRPD their) (NN father)) (COMMA ,) (BASENP (ADJP (JJ 53-year) (JJ old)) (NNP Domingo) (NNP Soyos)))) (VP (VBD were) (VP (VBN killed)))) (SBAR (WHADVP (WRB when)) (S (BASENP (PRPD their) (NN house)) (VP (VBD collapsed) (PP (IN into) (BASENP (DT the) (NN sinkhole))))))) (PERIOD .))