Joakim Bonnier ดำรงตำแหน่งโพลวันที่เท่าไหร่?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What date was Joakim Bonnier in the pole position?It is not neccessary to use all the tables.
 table_53106:  "Race" [ text]  "Circuit" [ text]  "Date" [ text]  "Constructor" [ text]  "Tyre" [ text]  "Report" [ text] 
SELECT "Date" FROM table_53106 WHERE "Pole position" = 'joakim bonnier'