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_21100348_10 (period VARCHAR, player VARCHAR)
### Question:
During what period did Ricky Ponting play?
### Answer:
SELECT period FROM table_21100348_10 WHERE player = "Ricky Ponting"