54.9 is the mean depth for what body of water.
Entity
m.04yy9y
Lake Nipigon
class literal
geography.body_of_water 54.9^^http://www.w3.org/2001/XMLSchema#float
geography.body_of_water type.float
Body Of Water 54.9
none none
geography.body_of_water.mean_depth
Mean depth
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :geography.body_of_water . 
VALUES ?x1 { "54.9"^^<http://www.w3.org/2001/XMLSchema#float> } 
?x0 :geography.body_of_water.mean_depth ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND geography.body_of_water (JOIN geography.body_of_water.mean_depth 54.9^^http://www.w3.org/2001/XMLSchema#float))