what is the {applies to part} for {Tagus river} has {coordinate location} as {-1.6975} ?
What is the other half of the coordinates for the Tagus River whose one half in -1.6975?
SELECT ?value WHERE { wd:Q14294 p:P625 ?s . ?s ps:P625 ?x filter(contains(?x,'-1.6975')) . ?s pq:P518 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q14294> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P625> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <-1.6975> .
?statement <http://www.wikidata.org/entity/P518> ?value. 
} 

Name the other half of Tagus River's coordinates apart from -1.6975