Test of <reln> with more than 2 children.
<math xmlns="http://www.w3.org/1998/Math/MathML"> <apply> <csymbol cd="fns2">predicate_on_list</csymbol> <csymbol cd="relation1">lt</csymbol> <apply> <csymbol cd="list1">list</csymbol> <ci>a</ci> <ci>b</ci> <ci>c</ci> <cn>10</cn> </apply> </apply> </math>
Author: Dave Doyle, Design Science