<http://www.yumiya-stone.com/construction-exp/example_3/attachment/wkex_3_04/#itempage>
<http://schema.org/dateModified>
"2020-10-27T15:16:11+09:00"^^<http://schema.org/Date>
<http://www.yumiya-stone.com/construction-exp/example_3/attachment/wkex_3_04/>