English nouns are not marked for case as they are in some languages, but they have possessive forms, through the addition of "-'s" (as in "John's", "children's") or just an apostrophe (with no change in pronunciation) in the case of "-s" plurals and sometimes other words ending with "-s" ("the dogs' owners", "Jesus' love"). More generally, the ending can be applied to noun phrases (as in "the man you saw yesterday's sister"); see below. The possessive form can be used either as a determiner ("John's cat") or as a noun phrase ("John's is the one next to Jane's").