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_44 (tonnage__grt_ INTEGER, nationality VARCHAR, name VARCHAR)
### Question:
Which Tonnage (GRT) has a Nationality of united kingdom, and a Name of king gruffydd?
### Answer:
SELECT MIN(tonnage__grt_) FROM table_name_44 WHERE nationality = "united kingdom" AND name = "king gruffydd"