Fix article

koboldgen.py

@@ -89,7 +89,7 @@ class Plot:
         if self.problem["needsName"]:
             self.problem["givenname"] = probName if probName != None else gen_name()
             self.fullProblem += self.problem["givenname"] + ", "
-        if not self.problem["isPlural"] and self.problem["name"].split(" ")[0] != "Old":
+        if not self.problem["isPlural"] and self.problem["name"].split(" ")[0] not in ["Old", "Pev"]:
             if self.problem["name"][0].lower() in ["a","e","i","o","u"]:
                 self.fullProblem += "an "
             else: