_:nda7e46ae9afb4549931088cb1efbda1axb0
<http://schema.org/dateModified>
"2020-09-21T16:20:00Z"^^<http://schema.org/Date>
<https://www.tpr.org/science-technology/2013-11-06/4-d-printing-means-building-things-that-build-themselves>