Possessive DPs located in Spec

  Are possessive DPs located in Spec, DP in St’át’imcets? Say why or why not, referring to the data in (7). (7) Áts’x-en=lhkan ta tsítcw-s=a ta kúkwpi7=a. see-tr=1sg.su det house-3poss=exis det chief=exis ‘I saw the chief’s house.’