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 member (membership_card VARCHAR, address VARCHAR)
### Question:
What is the membership card held by both members living in Hartford and ones living in Waterbury address?
### Answer:
SELECT membership_card FROM member WHERE address = 'Hartford' INTERSECT SELECT membership_card FROM member WHERE address = 'Waterbury'