Which institution has a nickname of Blue Hens?
CREATE TABLE table_50251 (
    "Institution" text,
    "Location" text,
    "Nickname" text,
    "Enrollment" real,
    "Established" real
)
SELECT "Institution" FROM table_50251 WHERE "Nickname" = 'blue hens'
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: Which institution has a nickname of Blue Hens? ### Input: CREATE TABLE table_50251 (
    "Institution" text,
    "Location" text,
    "Nickname" text,
    "Enrollment" real,
    "Established" real
) ### Response: SELECT "Institution" FROM table_50251 WHERE "Nickname" = 'blue hens'