Question: who are the current members of def leppard
[{'answer': 'Joe Elliott', 'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 160, 'end_paragraph_id': 1, 'end_character': 171, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Rick Savage', 'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 187, 'end_paragraph_id': 1, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Rick Allen', 'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 223, 'end_paragraph_id': 1, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Phil Collen', 'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 259, 'end_paragraph_id': 1, 'end_character': 270, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Vivian Campbell', 'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 302, 'end_paragraph_id': 1, 'end_character': 317, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '174857', 'title': 'Def Leppard', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 387, 'bleu_score': 0.8143149451011421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9757836050813156050}, 'section': 'Section::::Abstract.'}]}]