Question: when was the current world cup trophy introduced
[{'answer': '1999', 'provenance': [{'wikipedia_id': '7239', 'title': 'Cricket World Cup', 'start_paragraph_id': 7, 'start_character': 607, 'end_paragraph_id': 7, 'end_character': 611, 'bleu_score': 1.0, 'section': 'Section::::History.:Before the first Cricket World Cup.\n'}]}, {'provenance': [{'wikipedia_id': '7239', 'title': 'Cricket World Cup', 'start_paragraph_id': 45, 'start_character': 0, 'end_paragraph_id': 45, 'end_character': 380, 'bleu_score': 0.970795021215021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2143661842432590429}, 'section': 'Section::::Trophy.\n'}]}]