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 manufacturers (revenue INTEGER, Headquarter VARCHAR)
### Question:
What is the total revenue of all companies whose main office is at Tokyo or Taiwan?
### Answer:
SELECT SUM(revenue) FROM manufacturers WHERE Headquarter = 'Tokyo' OR Headquarter = 'Taiwan'