DPLA initial review

[jallibunn]

@ewg118

DPLA staff completed the initial review of the harvester output for DPLA. Their document, with my annotations in purple, is here: https://docs.google.com/document/d/1k_Jt0jLR0UCwLsFvQOg7FDaCTf7MV1ACkMi7UYkFGQ0/edit?usp=sharing

Main questions for you:
IsShownAt:
Two different places these are found: isShownAt/@Rdf:resource (33,829 records) and isShownAt/WebResource/@Rdf:about (35,829)
3,906 have no isShownAt (these are a portion, but not all, of the Linfield College sets; I cannot find the origin of this issue)