Q:

Coleridge claimed to have conceived 'Kubla Khan' in a dream. 

• 1
  'Kubla Khan' was being conceived in a dream as claimed by Coleridge.
• 2
  'Kubla Khan' was conceived in a dream was claimed by Coleridge.
• 3
  'Kubla Khan' had been claimed to be conceived in a dream by Coleridge.
• 4
  'Kubla Khan' was claimed to have been conceived in a dream by Coleridge.