prefix bio: <http://purl.org/vocab/bio/0.1/> 
prefix foaf: <http://xmlns.com/foaf/0.1/> 
prefix time: <http://www.w3.org/2006/time#> 
prefix xsd:  <http://www.w3.org/2001/XMLSchema#>
prefix ex: <http://example.org/ex#> 
prefix thing: <http://example.org/thing#> 

select ?nameBefore ?nameAfter where {
  ?pBefore a ex:ResidenceContext .
  ?pBefore ex:individual thing:anon .
  ?pBefore ex:place ?placeBefore .
  ?placeBefore foaf:name ?nameBefore .

  ?pBefore time:intervalContains ?dateBefore .
  filter (xsd:integer(?dateBefore) <= 1874) .

  ?pAfter a ex:ResidenceContext .
  ?pAfter ex:individual thing:anon .
  ?pAfter ex:place ?placeAfter .
  ?placeAfter foaf:name ?nameAfter .

  ?pAfter time:intervalContains ?dateAfter .
  filter (xsd:integer(?dateAfter) > 1874) .


  ?pBefore time:intervalBefore ?pAfter .
}