The repository contains several mix:title nodes, where prop_pagecount has different values.
root
document1 (mix:title) jcr:title="War and peace" jcr:description="roman" prop_pagecount=4
document2 (mix:title) jcr:title="Cinderella" jcr:description="fairytale" prop_pagecount=7
document3 (mix:title) jcr:title="Puss in Boots" jcr:description="fairytale" prop_pagecount=1