CREATE TABLE table_73555 ("No. in series" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( in millions ) " CLOB)

What is the title when 2.50 is u.s. viewers (in millions)?
SELECT "Title" FROM table_73555 WHERE "U.S. viewers (in millions)" = '2.50'
SELECT "Title" FROM "table_73555" WHERE "U.S. viewers (in millions)" = '2.50'