Question: a type of basic rock popular in the 1980s
[{'answer': 'alternative rock', 'provenance': [{'wikipedia_id': '25423', 'title': 'Rock music', 'start_paragraph_id': 2, 'start_character': 776, 'end_paragraph_id': 2, 'end_character': 792, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25423', 'title': 'Rock music', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1186, 'bleu_score': 0.938075800786991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1373518594687285591}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25423', 'title': 'Rock music', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1373518594687285591}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25423', 'title': 'Rock music', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['From the 1990s alternative rock began to dominate rock music and break into the mainstream in the form of grunge, Britpop, and indie rock.', 'By the late 1960s "classic rock" period, a number of distinct rock music subgenres had emerged, including hybrids like blues rock, folk rock, country rock, southern rock, raga rock, and jazz-rock, many of which contributed to the development of psychedelic rock, which was influenced by the countercultural psychedelic and hippie scene. New genres that emerged included progressive rock, which extended the artistic elements; glam rock, which highlighted showmanship and visual style; and the diverse and enduring subgenre of heavy metal, which emphasized volume, power, and speed. In the second half of the 1970s, punk rock reacted by producing stripped-down, energetic social and political critiques. Punk was an influence in the 1980s on new wave, post-punk and eventually alternative rock. From the 1990s alternative rock began to dominate rock music and break into the mainstream in the form of grunge, Britpop, and indie rock. Further fusion subgenres have since emerged, including pop punk, electronic rock, rap rock, and rap metal, as well as conscious attempts to revisit rock\'s history, including the garage rock/post-punk and techno-pop revivals at the beginning of the 2000s.', 'Punk was an influence in the 1980s on new wave, post-punk and eventually alternative rock. From the 1990s alternative rock began to dominate rock music and break into the mainstream in the form of grunge, Britpop, and indie rock.']}}]}, {'provenance': [{'wikipedia_id': '975247', 'title': 'Modern rock', 'section': 'Section::::Radio format.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['Generally beginning with late 1970s punk but referring especially to alternative rock music since the 1980s, the phrase "modern rock" is used in the USA to differentiate the music from classic rock, which focuses on music recorded in the 1960s through to the early 1980s.', 'Modern rock is rock music made between the late 1970s to present day. Some radio stations use this term to distinguish themselves from classic rock, which is based in 1960s1980s rock music. Modern rock (also known as alternative radio) is a rock format commonly found on commercial radio; the format consists primarily of the alternative rock genre. Generally beginning with late 1970s punk but referring especially to alternative rock music since the 1980s, the phrase "modern rock" is used in the USA to differentiate the music from classic rock, which focuses on music recorded in the 1960s through to the early 1980s.', 'Generally beginning with late 1970s punk but referring especially to alternative rock music since the 1980s, the phrase "modern rock" is used in the USA to differentiate the music from classic rock, which focuses on music recorded in the 1960s through to the early 1980s.']}}]}]