CREATE TABLE table_6266 ("Episode" CLOB, "Title" CLOB, "Writer ( s ) " CLOB, "Preservation" CLOB, "Original airdate" CLOB)

Has Episode 1b-16 (42) been preserved?
SELECT "Preservation" FROM table_6266 WHERE "Episode" = '1b-16 (42)'
SELECT "Preservation" FROM "table_6266" WHERE "Episode" = '1b-16 (42)'