human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: No. in series, No. in season, Title, Directed by, Written by, Original U.S. air date, Prod. code, Viewers (millions)
###Question: Who was the directed for the episode titled "twister: part 1"?
gpt
SELECT Directed by FROM table WHERE Title = "Twister: Part 1"