Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_16729930_17 (memory VARCHAR, model_number VARCHAR)
### Question:
Name the memory for meodel number for atom e640t
### Answer:
SELECT memory FROM table_16729930_17 WHERE model_number = "Atom E640T"