CREATE TABLE "opinion_poll_summary" (
  "party" text,
  "marplan" text,
  "gallup" text,
  "national_opinion_polls_nop" text,
  "opinion_research_centre_opc" text,
  "harris" text
);

Question: What is Party, when Opinion Research Centre (OPC) is 1.5%?
SQL: SELECT "party" FROM "opinion_poll_summary" WHERE "opinion_research_centre_opc"='1.5%';

Question: What is Marplan, when Gallup is 1.5%
SQL: SELECT "marplan" FROM "opinion_poll_summary" WHERE "gallup"='1.5%';

Question: What is Opinion Research Centre (OPC), when Party is Conservative?
SQL: SELECT "opinion_research_centre_opc" FROM "opinion_poll_summary" WHERE "party"='conservative';

Question: What is Harris, when Marplan is 1.3%
SQL: SELECT "harris" FROM "opinion_poll_summary" WHERE "marplan"='1.3%';