Which FCC info has a Call sign of wsja?
CREATE TABLE "full_powered_stations" (
  "call_sign" text,
  "frequency_m_hz" real,
  "city_of_license" text,
  "erp_w" real,
  "class" text,
  "fcc_info" text
);
SELECT "fcc_info" FROM "full_powered_stations" WHERE "call_sign"='wsja';