duce() the number of frivolous suits brought solely to extract settlements." in re Rockefeller Ctr. Props., Inc., 311 F.3d at 215 (quoting In re Burlington Coat Factory Sea Litig., 114 F.3d at 1418). "Rule 9(b) requires a plain- tiff to plead (1) a specific false representa- tion of material fact; (2) knowledge by the person