Question: who sang theme song for license to kill
[{'answer': 'Gladys Knight'}, {}, {'provenance': [{'wikipedia_id': '52075363', 'title': 'Licence to Kill (song)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"Licence to Kill" is a 1989 song by Gladys Knight, written and recorded for the James Bond film "Licence to Kill", also from 1989.', 'Licence to Kill" is a 1989 song by Gladys Knight, written and recorded for the James Bond film "Licence to Kill", also from 1989.', '"Licence to Kill" is a 1989 song by Gladys Knight, written and recorded for the James Bond film "Licence to Kill", also from 1989.']}}]}, {'provenance': [{'wikipedia_id': '449547', 'title': 'Licence to Kill', 'section': 'Section::::Production.:Music.\n', 'start_paragraph_id': 52, 'end_paragraph_id': 52, 'meta': {'evidence_span': ['Initially Vic Flick, who had played lead guitar on Monty Norman\'s original 007 theme, and Eric Clapton were asked to write and perform the theme song to "Licence to Kill" and they produced a theme to match Dalton\'s gritty performance, but the producers turned it down and instead Gladys Knight\'s song and performance was chosen.', 'Initially Vic Flick, who had played lead guitar on Monty Norman\'s original 007 theme, and Eric Clapton were asked to write and perform the theme song to "Licence to Kill" and they produced a theme to match Dalton\'s gritty performance, but the producers turned it down and instead Gladys Knight\'s song and performance was chosen.']}}]}]