You will be given a definition of a task first, then some input of the task.
Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

When was or like plate tectonics can be seen as the intimate coupling between rigid plates on the surface of the Earth and what?
Output:
Plate tectonics can be seen as the intimate coupling between rigid plates on the surface of the Earth and what?