  We show that the restriction functor from oriented factor planar algebras to
subfactor planar algebras admits a left adjoint, which we call the free
oriented extension functor. We show that for any subfactor planar algebra
realized as the standard invariant of a hyperfinite $\rm{II}_1$ subfactor, the
projection category of the free oriented extension admits a realization as
bimodules of the hyperfinite $\rm{II}_{1}$ factor.
