ข้อขัดแย้งใดเกิดขึ้นในเยเมน?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Which conflicts took place in Yemen?It is not neccessary to use all the tables.
 table_22891:  "Conflict" [ text]  "Continent" [ text]  "Location" [ text] 
SELECT "Conflict" FROM table_22891 WHERE "Location" = 'Yemen'