ฝูงชน 78,431 คนมาร่วมงานวันไหน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
On what date was the attendance of the crowd 78,431?It is not neccessary to use all the tables.
 table_52231:  "Week" [ real]  "Date" [ text]  "Opponent" [ text]  "Result" [ text]  "Attendance" [ text] 
SELECT "Date" FROM table_52231 WHERE "Attendance" = '78,431'