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_10 (s_no INTEGER, opponent VARCHAR)
### Question:
what is the number of people in sri lanka
### Answer:
SELECT AVG(s_no) FROM table_name_10 WHERE opponent = "sri lanka"