Where was something built earlier than 1858?
CREATE TABLE "table_4_early_o_s_n_monopoly_boats" (
  "name" text,
  "type" text,
  "year_built" real,
  "where_built" text,
  "initial_owners" text
);
SELECT "where_built" FROM "table_4_early_o_s_n_monopoly_boats" WHERE "year_built"<1858;