pplies to every case, and the format #$IntervalEntry (q.v.) to state that the Nth items of any two such sequences must be #$ScalarIntervals that intersect (see #$quantityIntersects). Thus, the first argument-place of #$biologicalMother has the format (see #$arg1Format) #$SetTheFormat, since a given female animal might have any number (including zero) of offspring; but the second argument-place of this predicate has (see #$arg2Format) #$SingleEntry format, since any given animal has at most (in fact, exactly