human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Week, Date, Opponent, Result, Attendance
###Question: What is the average Week when the result was w 28–20, and there were more than 46,888 in attendance?
gpt
SELECT AVG Week FROM table WHERE Result = w 28–20 AND Attendance > 46,888