(S (S (BASENP (DT The) (JJ 80-year-old) (NN billionaire)) (VP (VBD was) (VP (VP (VBN treated) (PP (IN in) (BASENP (NN hospital)))) (PP (IN for) (NP (BASENP (NN head) (NNS injuries)) (SBAR (S (BASENP (PRP he)) (VP (VBD sustained) (PP (IN in) (NP (BASENP (DT the) (NN attack)) (COMMA ,) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (BASENP (DT the) (NN four) (NNS muggers)) (VP (VP (VBD stole) (NP (BASENP (QP (SHARP #) (NN 200,000))) (PP (IN of) (BASENP (NN jewellery))))) (PP (IN from) (NP (BASENP (PRP him)) (CC and) (BASENP (PRPD his) (JJ 31-year-old) (NN girlfriend))))))))))))))))) (PERIOD .))