CREATE TABLE "teams" (
  "season" text,
  "skip" text,
  "third" text,
  "second" text,
  "lead" text,
  "alternate" text,
  "events" text
);

Question: What was the lead with an alternate of li dongyan?
SQL: SELECT "lead" FROM "teams" WHERE "alternate"='li dongyan';

Question: Which lead had a season of 2007-08?
SQL: SELECT "lead" FROM "teams" WHERE "season"='2007-08';

Question: Which lead had a season of 2009-10?
SQL: SELECT "lead" FROM "teams" WHERE "season"='2009-10';