Mia wants to find someone who has been to Antarctica

The chain

1. M

   Mia · New York · Wish

   Has anyone been to Antarctica?

2. L

   YouLouise · San Francisco · Ripple 1

   My coworker went to Argentina — asking her!

3. O

   Oliver · London · Ripple 2

   My uncle worked on a research vessel. Sending to him.

4. L

   Lina · Shanghai · Ripple 3

   Asking his old crewmates now.