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 ((:path . "ws12") (:content . "WeScience Articles 71 -- 78"))
 ((:path . "ws13") (:content . "WeScience Articles 79 -- 88 (Test)"))
 ((:path . "ws14") (:content . "WeScience Articles 89 -- 91 (Held-Out)"))
 ((:path . "ws15") (:content . "WeScience Articles 92 -- 96 (Held-Out)"))
 ((:path . "ws16") (:content . "WeScience Articles 97 -- 100 (Held-Out)"))
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