ตัวระบุที่มีกำลังไฟ 50,000 วัตต์คืออะไร?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is the identifier that has 50,000 watts of power?It is not neccessary to use all the tables.
 table_41556:  "Identifier" [ text]  "Frequency" [ text]  "Power" [ text]  "Class" [ text]  "RECNet" [ text] 
SELECT "Identifier" FROM table_41556 WHERE "Power" = '50,000 watts'