Detailed Instructions: In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
Problem:A perfect example of Real Politik was when Bismarck manipulated the letter written by the king and sent it to the French emperor Napoleon III . 
Solution:
A perfect example of realpolitik was when Bismarck manipulated the letter written by the king and sent it to the French emperor Napoleon III . 