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_72 (dates_administered VARCHAR, lead_margin VARCHAR, poll_source VARCHAR)
### Question:
What were the dates administered when the lead margin was larger than 14 and the poll source was Research 2000?
### Answer:
SELECT dates_administered FROM table_name_72 WHERE lead_margin > 14 AND poll_source = "research 2000"