Table: political_parties_nl
Columns: name
abbr
political_leader
international_affiliation
votes_2012
house_of_rep_seats
senate_seats
european_parliament_seats

Question: What is the smallest number of European Parliament sets when the international affiliation is global greens, egp? 
SQL: SELECT MIN("european_parliament_seats") FROM political_parties_nl WHERE "international_affiliation" = 'Global Greens, EGP'

Question: How many categories of Senate Seats does Emile Roemer have? 
SQL: SELECT COUNT("senate_seats") FROM political_parties_nl WHERE "political_leader" = 'Emile Roemer'