source: [lemma=be] □ □ □ □
destination: [lemma=be] [□] □ □ □
spec: On the other hand , but equally urgent , is the need to develop effective contraceptive technologies that also prevent STD / HIV , and from this perspective , it will be increasingly difficult to view pregnancy prevention totally apart from STD / HIV prevention . I 'm excited to be going home but sad to be leaving Sweden .