CREATE TABLE table_59143 ("Event" CLOB, "Time" CLOB, "Swimmer" CLOB, "School" CLOB, "Year" FLOAT)

What is School, when Event is '100 Backstroke'?
SELECT "School" FROM table_59143 WHERE "Event" = '100 backstroke'
SELECT "School" FROM "table_59143" WHERE "Event" = '100 backstroke'