W.E. Collins executed and delivered to the Church of God of Prophecy a warranty deed with the following language: This transfer or deed is made with the full understanding that should the property fail to be used for the Church of God, it is to be null and void and property to revert to W.E.Collins or heirs. What types of interests were created in the deed? Do any of the interests violate the Rule Against Perpetuities? [Collins v. Church of God of Prophecy,800S.W.2d418(Ark. 1990).]