Returns true if $arg1 is a longer duration than $arg2.
xs:yearMonthDuration
values. Also used in the definition of the "le" operator.op:yearMonthDuration-greater-than( $arg1 as xs:yearMonthDuration,$arg2 as xs:yearMonthDurationxs:booleanThe function call op:yearMonthDuration-greater-than($A, $B) is defined to
return the same result as op:yearMonthDuration-less-than($B, $A)