CREATE TABLE "list_of_spanish_era_concessions" (
  "concession" text,
  "date" real,
  "grantee" text,
  "size" text,
  "county" text
);

Question: Tell me the Grantee for san ysidro
SQL: SELECT "grantee" FROM "list_of_spanish_era_concessions" WHERE "concession"='san ysidro';

Question: Tell me the county for mariano castro
SQL: SELECT "county" FROM "list_of_spanish_era_concessions" WHERE "grantee"='mariano castro';

Question: Tell me the grantee for las pulgas in 1795
SQL: SELECT "grantee" FROM "list_of_spanish_era_concessions" WHERE "date"=1795 AND "concession"='las pulgas';