9. Train என்பது bus எனவும் , bus என்பது tractor எனவும், tractor என்பது car எனவும், car என்பது scooter எனவும், scooter என்பது bicycle எனவும், bicycle என்பது moped எனவும் கொண்டால், நிலத்தை உழுவதற்குப் பயன்படுவது எது? 9. If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field ? *