/**
  * @since 2.1
  *
  * @return SemanticData
  */
 public function getDependencies()
 {
     $semanticData = parent::getDependencies();
     $populationProperty = new PopulationProperty();
     $areaProperty = new AreaProperty();
     $semanticData->addPropertyObjectValue(new DIProperty('_LIST'), new DIBlob($populationProperty->getProperty()->getKey() . ';' . $areaProperty->getProperty()->getKey()));
     return $semanticData;
 }
 /**
  * @since 2.1
  *
  * @see https://en.wikipedia.org/wiki/Demographics_of_Paris
  *
  * @return DataValue
  */
 public function getPopulationValue()
 {
     $populationProperty = new PopulationProperty();
     return $this->dataValueFactory->newPropertyObjectValue($populationProperty->getProperty(), '2234105');
 }
 /**
  * @since 2.1
  *
  * @see https://en.wikipedia.org/wiki/Berlin
  *
  * @return DataValue
  */
 public function getPopulationValue()
 {
     $populationProperty = new PopulationProperty();
     return $this->dataValueFactory->newDataValueByProperty($populationProperty->getProperty(), '3517424');
 }