What is the lowest block for director Graeme Harper?
CREATE TABLE table_name_79 (block INTEGER, director VARCHAR)
SELECT MIN(block) FROM table_name_79 WHERE director = "graeme harper"
### Context: CREATE TABLE table_name_79 (block INTEGER, director VARCHAR) ### Question: What is the lowest block for director Graeme Harper? ### Answer: SELECT MIN(block) FROM table_name_79 WHERE director = "graeme harper"