human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Rank, Attendance, Opponent, Result, Date
###Question: What's the rank for February 11, 2012 with less than 18,735 in attendance?
gpt
SELECT AVG Rank FROM table WHERE Date = february 11, 2012 AND Attendance < 18,735