How many people boarded and de-boarded the Amtrak in Linthicum?
CREATE TABLE table_name_68 (
    boardings_and_deboardings VARCHAR,
    city VARCHAR
)
SELECT COUNT(boardings_and_deboardings) FROM table_name_68 WHERE city = "linthicum"
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: How many people boarded and de-boarded the Amtrak in Linthicum? ### Input: CREATE TABLE table_name_68 (
    boardings_and_deboardings VARCHAR,
    city VARCHAR
) ### Response: SELECT COUNT(boardings_and_deboardings) FROM table_name_68 WHERE city = "linthicum"