New column: Operator's country

[nicolas-raoul]

For instance:

country_of_operator;operator
Taiwan;Mainland Affairs Council
Togo;Togo

Right now Mainland Affairs Council has its own row, making it difficult to use.

Strategy A: One SPARQL request per operator, then sort as a final pass.
Strategy B: One SPARQL request per country, which also somehow includes non-country operators.