Freebase example query yields noncredible result

[graue70]

Running the example query "Cities in Germany population latest" (see below) on http://qlever.informatik.uni-freiburg.de/Clueweb+Freebase yields a strange result. It seems to suggest that the population of the first 73 cities is identical with the value of 7124543962.

PREFIX fb: <http://rdf.freebase.com/ns/>
SELECT ?city_name ?latest ?population_value WHERE {
  {
    SELECT ?city (MAX(?date) as ?latest) WHERE {
	  ?city fb:type.object.type fb:location.citytown .
      ?city fb:location.location.containedby fb:m.0345h .
      ?city fb:location.statistical_region.population ?population .
      ?population fb:measurement_unit.dated_integer.year ?date .
    }
	GROUP BY ?city
  }
  ?population fb:measurement_unit.dated_integer.year ?latest .
  ?population fb:measurement_unit.dated_integer.number ?population_value .
  ?city fb:type.object.name ?city_name .
}
ORDER BY DESC(?population_value)

[hannahbast]

The way subqueries are handled has been refactored and this bug no longer occurs.