<https://secure.gravatar.com/avatar/ed2186aeaf5d373df3d58c39ff0a7516?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.saltlakeroof.com/when-to-repair-asphalt-shingles/>