I'd bet something like neo4j would be able to do this fairly quickly. Never actually used it but from (minimal) reading this type thing is right in its wheelhouse and it's got a REST api (and there's some promising hits on CPAN).

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re: Cliques solution pertinent to my use case by Fletch
in thread Cliques solution pertinent to my use case by Sanjay

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