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_name_35 (asts INTEGER, school_country VARCHAR, rebs VARCHAR)
### Question:
What's the sum of asts for boston college with a rebs over 63?
### Answer:
SELECT SUM(asts) FROM table_name_35 WHERE school_country = "boston college" AND rebs > 63