TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: What city principal no proper has a population of 1,345,596?

SOLUTION: What city proper has a population of 1,345,596?

PROBLEM: What is the Rhine, scratch that, where does its name come from?

SOLUTION: Where does the name Rhine derive from? 

PROBLEM: According to Siad what type of climate was unnecessary for humans to become fully human no accroding to Ellen Churchill Semple?

SOLUTION:
According to Ellen Churchill Semple what type of climate was unnecessary for humans to become fully human?