valueName should have been defined for PropertyValueSpecification and not EntryPoint.
Added in error in v1.5, http://lists.w3.org/Archives/Public/public-vocabs/2014May/0295.html
Converged two fragments definitions for acceptsReservations.

"Indicates whether a FoodEstablishment accepts reservations. Values can be Boolean, an URL at which reservations can be made or (for backwards compatibility) the strings <code>Yes</code> or <code>No</code>."