(S (S (NP (BASENP (DT The) (NN accident)) (PRN (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD happened) (PP (IN at) (NP (BASENP (RB approximately) (NN 1940)) (BASENP (JJ local) (NN time))))))) (COMMA ,))) (VP (VBD killed) (NP (BASENP (DT a) (JJ 45-year-old) (NN father)) (CC and) (BASENP (PRPD his) (JJ 18-year-old) (NN daughter))))) (PERIOD .))