human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Name, Nearest city, Skiable area (acres), Top elevation (feet), Base elevation (feet), Vertical (feet), Runs, Lifts, Snowfall (in/year)
###Question: If there are 11 lifts, what is the base elevation?
gpt
SELECT MAX Base elevation (feet) FROM table WHERE Lifts = 11