El Piedrero was a non-delimited territory of Ecuador situated between
the provinces of Guayas and Cañar.[1][2] It was incorporated into the
Guayas Province by the decree issued by President Rafael Correa in
2017.[3]
[El Piedrero has no provinces added][https://www.openstreetmap.org/relation/2674418]
Has to be is_in:state of Guayas