In linguistics, possession is an asymmetric relationship between two constituents, the referent of one of which (the possessor) in some sense possesses (owns, has as a part, rules over, etc.) the referent of the other (the possessed). Possession may be marked in many ways, such as simple juxtaposition of nouns, possessive case, possessed case, construct state (as in Arabic, and Nêlêmwa), or adpositions (possessive suffixes, possessive adjectives). For example, English uses a possessive clitic, 's; a preposition, of; and adjectives, my, your, his, her, etc. Predicates denoting possession may be formed either by using a verb such as English have or by other means, such as existential clauses (as is usual in languages such as Russian). Some languages have more than two possessive classes. In Papua New Guinea, for example, Anêm has at least 20 and Amele has 32. Alienable and inalienable There are many types of possession, but a common distinction is alienable and inalienable possession. Alienability refers to the ability to dissociate something from its parent; in this case, a quality from its owner. When something is inalienably possessed, it is usually an attribute. For example, John's big nose is inalienably possessed because it cannot (without surgery) be removed from John; it is simply a quality that he has. In contrast, 'John's briefcase' is alienably possessed because it can be separated from John. Many languages make the distinction as part of their grammar, typically by using different affixes for alienable and inalienable possession. For example, in Mikasuki (a Muskogean language of Florida), ac-akni (inalienable) means 'my body', but am-akni (alienable) means 'my meat'. English does not have any way of making such distinctions (the example from Mikasuki is clear to English-speakers only because there happen to be two different words in English that translate -akni in the two senses: both Mikasuki words could be translated as 'my flesh', and the distinction would then disappear in English). Possessive pronouns in Polynesian languages such as Hawaiian and Māori are associated with nouns distinguishing between o-class, a-class and neutral pronouns, according to the relationship of possessor and possessed. The o-class possessive pronouns are used if the possessive relationship cannot be begun or ended by the possessor. Obligatory possession Obligatory possession is sometimes called inalienable possession. The latter, however, is a semantic notion that largely depends on how a culture structures the world, while obligatory possession is a property of morphemes. In