[[+yelpReviewLink:notempty=`Yelp`:else=`[[+pagetitle]]`]]
else:
This question has been answered by BobRay. See the first response.
[[!If? &subject=`[[+yelpReviewLink]]` &operator=`EQ` &operand=`` &then=`[[+pagetitle]]` &else=`Yelp` ]]