CREATE TABLE "pennsylvania" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "results" text
);

Question: Who is the republican Incumbent for Pennsylvania 9?
SQL: SELECT "incumbent" FROM "pennsylvania" WHERE "party"='republican' AND "district"='pennsylvania 9';

Question: What are the results for Bill Shuster?
SQL: SELECT "results" FROM "pennsylvania" WHERE "incumbent"='bill shuster';

Question: What is the greatest first elected for Pennsylvania 10?
SQL: SELECT MAX("first_elected") FROM "pennsylvania" WHERE "district"='pennsylvania 10';