human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Played, Drawn, Lost, Winning %, Tries, Conversions, Penalties, s Drop goal, Points total
###Question: How many ties did he have when he had 1 penalties and more than 20 conversions?
gpt
SELECT SUM Drawn FROM table WHERE Penalties = 1 AND Conversions > 20