This is the data frame called 'contest' with granularity as each submission of question from each contestant in the math contest. The question is
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In this question, we will be looking at the contest dataframe which contains data from a math contest in 2019. In the contest, each participant had a total of five questions. The participants submit each question separately and each row of the DataFrame records a particular submission of one of the contestants by some participant. The Timestamp column specifies the time a given problem is submitted by a participant; each timestamp is discretized to the minute and has been properly converted to a Pandas datetime object with pd.to datetime. The Contestant column contains the id-name pair of each participant. The Question column contains the question that was submitted. The Correct column tells us if the answer given in the submission is correct (1) or not (0). Assume each participant can have several submissions for the same problem, but they can only submit one question per minute.