1<?xml version="1.0" encoding="UTF-8"?> 2<out><junk>$top1 summary: top1-begin 3 top1-first1top1-first2top1-second1 4$top2 summary: top2-begin 5 top2-first1top2-first2top2-second1</junk> 6The preceding::t1 elements in $top2 are top2-first1,</out>