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_27 (overall_pick INTEGER, position VARCHAR, nfl_draft VARCHAR)
### Question:
What is the highest overall pick that has c as the position, with an NFL Draft greater than 1977?
### Answer:
SELECT MAX(overall_pick) FROM table_name_27 WHERE position = "c" AND nfl_draft > 1977