What is the number of matches when the wins are less than 8, and losses of 7, in 2011?
CREATE TABLE "performance_summary" (
  "year" text,
  "matches" real,
  "wins" real,
  "losses" real,
  "no_result" real,
  "win_pct" text
);
SELECT SUM("matches") FROM "performance_summary" WHERE "wins"<8 AND "losses"=7 AND "year"='2011';