source: [word=helpful] [lemma=be] [lemma=□] □
destination: [word=helpful] [lemma=be] [lemma=the] □
spec: Especially helpful are the extensive listings and information available at the WWW Virtual Library on Migration and Ethnic Relations . internal operations of the cooperative ( directors and management , debt vs. equity , quality & consistency of product , efficiency of production process , location , infrastructure , workforce , tax considerations , marketing vs. production emphasis ) .