What is the school namesake for Lincoln Junior High School?
CREATE TABLE table_55991 (
    "School's name" text,
    "School's namesake" text,
    "Year opened" text,
    "Principal" text,
    "Mascot" text
)
SELECT "School's namesake" FROM table_55991 WHERE "School's name" = 'lincoln junior high school'
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 school namesake for Lincoln Junior High School? ### Input: CREATE TABLE table_55991 (
    "School's name" text,
    "School's namesake" text,
    "Year opened" text,
    "Principal" text,
    "Mascot" text
) ### Response: SELECT "School's namesake" FROM table_55991 WHERE "School's name" = 'lincoln junior high school'