V4 - http://sports.stackexchange.com/questions/15215/nfl-teams-beating-the-same-team-3-times-in-a-season 

vs.

V13 - http://sports.stackexchange.com/questions/12937/what-happens-when-there-are-2-turnovers-on-1-play

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Comment: "My vote is - V4" or "My vote is - V13."