Rearrange the following sentences to make a coherent order: (i)Knowledge of these machines is essential to keep pace with the future world. (ii) The sooner we can make and activate this plan, the better it will be for us. (iii) This is known to be AI (Artificial Intelligence) Revolution. (iv) Therefore, learning technology and achieving technological skill should be thought of seriously. (v) The machines will mainly include computer, mobile phone and robot. (vi) But we can no longer wait; exact and realistic plan should be made now. (vii) The fourth revolution is knocking at the door. (viii) Those who are skillful in it will survive successfully. (ix) We have not yet been prepared for this sort of education. (x) This revolution will turn the world into a machine-based one.