Edit to accept mutiple POI parent links as well as single parent.
check containedBy, not poi._links.parent
Merge pull request #104 from ox-it/multiple-parents

Edit to accept mutiple POI parent links as well as single parent.
Merge branch 'master' into test-notifications

* master:
  check containedBy, not poi._links.parent
  Edit to accept mutiple POI parent links as well as single parent.