CREATE TABLE "the_party_demo_intro_compo_winners_1991_" (
  "year" text,
  "amiga_demo" text,
  "pc_demo" text,
  "c64_demo" text,
  "amiga_intro" text,
  "pc_intro" text
);

Question: Who won best amiga demo when tribes ( pulse & melon dezign) won best pc demo?
SQL: SELECT "amiga_demo" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "pc_demo"='Tribes ( Pulse & Melon Dezign)';

Question: What won best amiga demo when alto knallo (free electric band) won best pc demo?
SQL: SELECT "amiga_demo" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "pc_demo"='Alto Knallo (Free Electric Band)';

Question: What won best pc intro when my kingdom (haujobb & scoopex) won best amiga demo?
SQL: SELECT "pc_intro" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "amiga_demo"='My Kingdom (Haujobb & Scoopex)';

Question: What won est pc intro when 4k0 (polka brothers) won best amiga intro?
SQL: SELECT "pc_intro" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "amiga_intro"='4k0 (Polka Brothers)';

Question: What won best pc demo when tower power (camelot) won best c64 demo?
SQL: SELECT "pc_demo" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "c64_demo"='Tower Power (Camelot)';

Question: What year did fr-08: the product ( farbrausch ) win best pc intro?
SQL: SELECT "year" FROM "the_party_demo_intro_compo_winners_1991_" WHERE "pc_intro"='FR-08: The Product ( Farbrausch )';