You will be given a definition of a task first, then some input of the task.
Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.

Relationship: 'become', Argument/Subject 1: 'skywalker', Argument/Subject 2: 'darth vader'
Output:
Palpatine declares himself Emperor , and Anakin Skywalker becomes Darth Vader .