I'm not sure who maintains Reasonator, but I figure they probably subscribe to this list.
It would be really awesome if Reasonator didn't ignore the Of (P:642) qualifier in Positions Held (P:39).
See: http://tools.wmflabs.org/reasonator/?&q=17152496
It just says that Randy McClement (Q:17152496) was Mayor, even though the Wikidata item has that we was Mayor of Frederick. I'm sure there are lots of other instances where this issue comes up.
Thank you, Derric Atzrott Computer Specialist Alizee Pathology