Q:

The story of his uncle’s mysterious disappearance was first heard by Rajat in his childhood

• 1
  The story uncle heard first time was about Rajat’s mysterious disappearance in his childhood.
• 2
  Rajat first heard the story of his uncle’s mysterious disappearance in his childhood.
• 3
  The story Rajat first heard in his childhood was about his uncle’s mysterious disappearance.
• 4
  Rajat’s first story that uncle heard in his childhood was about his mysterious disappearance.