Question: when did korn's follow the leader come out
[{'answer': 'August 18 , 1998', 'provenance': [{'wikipedia_id': '236765', 'title': 'Follow the Leader (Korn album)', 'start_paragraph_id': 10, 'start_character': 160, 'end_paragraph_id': 10, 'end_character': 176, 'bleu_score': 1.0, 'section': 'Section::::Promotion.\n'}]}, {'provenance': [{'wikipedia_id': '236765', 'title': 'Follow the Leader (Korn album)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 262, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3837179065129652460}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '236765', 'title': 'Follow the Leader (Korn album)', 'section': 'Section::::Promotion.\n', 'start_paragraph_id': 10, 'end_paragraph_id': 10, 'meta': {'evidence_span': ['The tour started on September 22, 1998, ending on October 31, 1998.', '"Follow the Leader" is recognized as Korn\'s mainstream breakthrough, and the album that launched nu metal into the mainstream. "Follow the Leader" was released August 18, 1998,', '"Follow the Leader" is recognized as Korn\'s mainstream breakthrough, and the album that launched nu metal into the mainstream. "Follow the Leader" was released August 18, 1998, and was awarded multi-platinum certification for shipments in excess of five million copies, by the RIAA on March 15, 2002. In fall of 1998, Korn started the Family Values Tour. According to Arvizu, the tour name was due to "so many of their friends who were like family to us played in bands". The tour started on September 22, 1998, ending on October 31, 1998. The tour grossed over 6.4 million (6,400,000). Korn maintained a generally low ticket price, usually no more than thirty dollars. Korn toured with the band Limp Bizkit, as well as Ice Cube, Orgy, Incubus, and Rammstein. The tour was considered to be a major success, and promoted "Follow the Leader" to sales that were considered to have "skyrocketed". However, unlike all their other tours, they opted not to play in Europe for this cycle.']}}]}]