Substantial evidence, in turn, must be “more than a mere scintilla. It means such relevant evidence as a reasonable mind must accept as adequate to support a conclusion.” Olen v. Colvin, No. 12–12424–JLT, 2014 WL 1912357, at *4 (D.Mass. May 7, 2014) (quoting Richardson v. Perales, 402 U.S. 389, 401, 91 S.Ct. 1420, 28 L.Ed.2d 842 (1971) ) (internal quotation marks omitted). The Commissioner, not the Court, is tasked with “determin[ing] issues of credibility and ... draw[ing] inferences from the record evidence.”