Hi,
regarding https://www.openstreetmap.org/way/1426757471: If this area is really just a "paddock, connected to stable", then it is not a riding centre; perhaps it belongs to one, but then there should be another object (node or area) for this riding centre. Related wiki pages:
https://wiki.openstreetmap.org/wiki/Tag:landuse=animal_keeping
https://wiki.openstreetmap.org/wiki/How_to_map_a#Riding_centre_(equestrian)
https://www.openstreetmap.org/way/410524276 (example)