Linden Lab , based in San Francisco , has taken an even more open approach on the question of intellectual property rights .
Linden Lab /business/company/place_founded San Francisco
NNP NNP , VBN IN NNP NNP , VBZ VBN DT RB RBR JJ NN IN DT NN IN JJ NN NNS .
Linden Lab
PERSON
San Francisco
LOCATION
/business/company/place_founded