Question: Pennsylvania Route 51 (PA 51) is a major state highway in Western Pennsylvania, Century III Mall is located on this road, an ailing enclosed shopping mall located in the southern Pittsburgh suburb of West Mifflin, in Pennsylvania, opened in what year?
Sentence (from "Pennsylvania Route 51"): Route 51 is the termination point for Pennsylvania Route 43, Pennsylvania Route 48 and Pennsylvania Route 88.
Relevant evidence: No