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_78 (round INTEGER, player VARCHAR, pick VARCHAR, position VARCHAR)
### Question:
What is the highest round of Ed Smith, who had a pick higher than 261 and played halfback?
### Answer:
SELECT MAX(round) FROM table_name_78 WHERE pick < 261 AND position = "halfback" AND player = "ed smith"