String contains across two pandas series

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Chapters
00:00 Question
01:02 Accepted answer (Score 5)
01:44 Answer 2 (Score 5)
02:51 Answer 3 (Score 4)
04:24 Answer 4 (Score 3)
04:59 Thank you

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Full question
https://stackoverflow.com/questions/4904...

Answer 2 links:
[@Wen's answer]: https://stackoverflow.com/a/49040672/233...

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Tags
#python #string #pandas #dataframe

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