Image-mysql statement error?

We made a table sicence_fiction_film ,:! If you want to delete the row aaa in the name column, enter deletefromsicence_fiction_filmwherenameaaa. However, an error is returned, indicating that you do not know where the column aaa is located? Please answer? Mysql image

In the sicence_fiction_film table, to delete the row aaa in the name column, enter the following:
Delete from sicence_fiction_film where name = aaa;
An error is reported, indicating that the column aaa is unknown?
Please answer?