What is the lowest enrolled school that was founded in 1992 and joined a conference before 1998?
CREATE TABLE table_50469 (
    "Institution" text,
    "Location" text,
    "Founded" text,
    "Joined Conference" real,
    "Enrollment" real,
    "Nickname" text
)
SELECT MIN("Enrollment") FROM table_50469 WHERE "Founded" = '1992' AND "Joined Conference" < '1998'
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 lowest enrolled school that was founded in 1992 and joined a conference before 1998? ### Input: CREATE TABLE table_50469 (
    "Institution" text,
    "Location" text,
    "Founded" text,
    "Joined Conference" real,
    "Enrollment" real,
    "Nickname" text
) ### Response: SELECT MIN("Enrollment") FROM table_50469 WHERE "Founded" = '1992' AND "Joined Conference" < '1998'