Wikidata item Q288 (Tours in France) have 1 value for P625 (coordinates): https://www.wikidata.org/wiki/Q288#P625
But in this WDQS query:
SELECT ?item ?coordinate ?coordinate_node ?latitude ?longitude WHERE { VALUES ?item { wd:Q288 } ?item p:P625 ?coordinate. ?coordinate psv:P625 ?coordinate_node. ?coordinate_node wikibase:geoLatitude ?latitude. ?coordinate_node wikibase:geoLongitude ?longitude. }
you get results for ?latitude and ?longitude with both unrounded values (47.392777777778, 0.68833333333333) and values rounded to 4 decimals (47.3928, 0.6883), combined for a total of 4 results. There should only be 1 result.