A widow [who was married] to a Kohen Gadol, [or] a divorcee or chalutzah [who was married] to an ordinary Kohen —- [even if they were only] betrothed, they may not eat terumah; R' Elazar and R' Shimon [however] validate [it]. [If] they were widowed or divorced —- [if it was] from marriage, they are disqualified; [but if] from betrothal, they are qualified.