    Sentence 1: The Standard & Poor 's 500 index  declined 6.11, or 0.6 per cent, to 1003.27 ; having  hed 19.67 inthe previous session.    Sentence 2: The Standard. & Poor 's 500 index.  ideclined by 4.39, or 0.4 percent , to 998.88 , after  llosing 6.11 on Thursday .    