Definition: The answer will be 'yes' if the provided sentence contains an explicit mention that answers the given question. Otherwise, the answer should be 'no'. Instances where the answer is implied from the sentence using "instinct" or "common sense" (as opposed to being written explicitly in the sentence) should be labeled as 'no'.
Input: Sentence: Tocqueville was a classical liberal who advocated parliamentary government, but was skeptical of the extremes of democracy. 
Question: How often did he join different political [parties?

No.