What is the title when 2.50 is u.s. viewers (in millions)?
CREATE TABLE table_73555 (
    "No. in series" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (in millions)" text
)
SELECT "Title" FROM table_73555 WHERE "U.S. viewers (in millions)" = '2.50'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the title when 2.50 is u.s. viewers (in millions)? ### Input: CREATE TABLE table_73555 (
    "No. in series" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "U.S. viewers (in millions)" text
) ### Response: SELECT "Title" FROM table_73555 WHERE "U.S. viewers (in millions)" = '2.50'