Add all (crisis) relevant properties to SemanticCrawler::Factbook::Country

[obale]

The reason why all crisis relevant properties are added first is that this library should be use in the scope of Sigimera (http://www.sigimera.org). Additional properties will be added in the future.

As fallback mechanism it is always possible to execute XPath on the RDF file.

[obale]

The following properties are supported:

• name
• background: A human readable description about the country
• _populationtotal
• latitude and longitude
• landboundary: Countries that share a boarder with the country
• terrain: A human readable description how the terrain of the country looks like
• _airportstotal
• heliports
• location: A human readable descri

There are a lot more information, but these are not relevant for the current use. The Factbook::Country will be extended if necessary.