input: from typing import List, Tuple
  
  def select_horror_movies(database: str) -> List[Tuple]:
      """ Connect to a SQLite database, execute a SELECT query to retrieve all movies 
      from the 'Movies' table where the category is 'horror', and return the results.
      >>> select_horror_movies('movies.db')
      [(1, 'The Exorcist', 'horror'), (2, 'A Quiet Place', 'horror')]
      """
      import sqlite3
      conn = sqlite3.connect(database)
      cursor = conn.cursor()
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
      conn.close()
      return result
output:     import sqlite3
      conn = sqlite3.connect(database)
      cursor = conn.cursor()
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
      conn.close()
      return result