Q:

“Are you the same person I met in the park?” I asked. 

• 1
  I asked the stranger if I was the same person he had met in the park.
• 2
  I asked the stranger if he was the same person I met in the park.
• 3
  I asked the stranger if he was the same person I had met in the park.
• 4
  Was he the same person I met in the park I asked the stranger.