The 1977 flood —in what was to have been a `` flood free '' city—may have contributed to Johnstown 's subsequent population decline and inability to attract new residents and businesses .
DET NUM NOUN —in PRON VERB PART AUX VERB DET `` NOUN ADJ '' X AUX VERB ADP PROPN PART ADJ NOUN NOUN CCONJ NOUN PART VERB ADJ NOUN CCONJ NOUN .