TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: In which or no make that year did Harvard Stadium become the first ever concrete reinforced stadium in the country?

SOLUTION: In what year did Harvard Stadium become the first ever concrete reinforced stadium in the country?

PROBLEM: What is cost engineers no no scratch that what is an obvious source for cost engineers?

SOLUTION: What is an obvious source for cost engineers?

PROBLEM: Who won the Ekstraklasa Championship in 1946 uh sorry 2000?

SOLUTION:
Who won the Ekstraklasa Championship in 2000?