Definition of 's:
(v) :
Contraction of is. [(now colloquial) Used in phrases with existential there (also here and where) when the semantic subject is plural.]
(v) :
Contraction of has.
(v) :
(proscribed, dialectal, Southern US) Contraction of was. [(now colloquial) Used in phrases with existential there when the semantic subject is (usually third-person) plural.]
(v) :
(informal) Contraction of does, used only with the auxiliary meaning of does and only after interrogative words.
(adv) :
(UK, dialect) Contraction of as. [To such an extent or degree; to the same extent or degree.]