TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: Which side is the population no um SR 99 built on?

SOLUTION: Which side is SR 99 built on?

PROBLEM: What demands uh instead position did the tax collector that arrested Thoreau get?

SOLUTION: What position did the tax collector that arrested Thoreau get?

PROBLEM: What borders er when did the Peace of Westphalia last until?

SOLUTION:
When did the Peace of Westphalia last until?