A potential implicature is an implicature that would arise from any of the components of a givenutterance if that component were uttered in some linguistic or extralinguistic context, whether or not the implicature is an actual implicature of the given utterance.
English
The sentence I think that some went has two potential implicatures:
Levinson, Stephen C. 1983.Pragmatics. Cambridge, England: Cambridge University.
Gazdar, Gerald. 1979.Pragmatics: Implicature, presupposition, and logical form. New York: Academic.