I need context to answer definitively but apostrophes show possession but there are also possessive pronouns (Mine, His, Hers, Yours, Its, Ours, Yours, Theirs), possessive adjectives (My, Your, His, Her, Its, Our, Your, Their), personal pronouns:This is either about the (subject you or them the object, I, Me, You, He, Him, She, Her, It, We, Us, Them, They) and lastly I would say the Plurality (something Plural also indicates or shows possession).
She didn't want Persephone (Demeter's daughter) to be in a gloomy place but Hades and Demeter strike a deal "If you let me marry your daughter i'll give her back for 6 months and after the 6 months are over you give her to me and we go back and forth." Hades said. Demeter agreed and also that's why we have seasons
