tokens: Acquired immunodeficiency syndrome ( AIDS ) results from infection with a human immunodeficiency virus ( HIV ) .
folded_tokens: acquired immunodeficiency syndrome ( aids ) results from infection with a human immunodeficiency virus ( hiv ) .
labels: B-other_name I-other_name I-other_name O B-other_name O O O O O O B-virus I-virus I-virus O B-virus O O