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\begin{summarylist}{ll}
\predicatesummary{call_nth}{2}{True when Goal succeeded for the Nth time.}
\predicatesummary{distinct}{1}{True if Goal is true and no previous solution of Goal bound Witness to the same value.}
\predicatesummary{distinct}{2}{True if Goal is true and no previous solution of Goal bound Witness to the same value.}
\predicatesummary{group_by}{4}{Group bindings of Template that have the same value for By.}
\predicatesummary{limit}{2}{Limit the number of solutions.}
\predicatesummary{offset}{2}{Ignore the first Count solutions.}
\predicatesummary{order_by}{2}{Order solutions according to Spec.}
\predicatesummary{reduced}{1}{Similar to distinct/1, but does not guarantee unique results in return for using a limited amount of memory.}
\predicatesummary{reduced}{3}{Similar to distinct/1, but does not guarantee unique results in return for using a limited amount of memory.}
\end{summarylist}