#foster-parent  a person who acts as parent and guardian for a child in place of the child's natural parents but without legally adopting the child
  supertype:  guardian__defender__protector__shielder  a person who cares for persons or property
  subtype:  foster-father  a man who is a foster parent
  subtype:  foster-mother__fostermother  a woman who is a foster parent and raises another's child

No statement uses or specializes foster-parent; click here to add one.