https://manifold.bfi.uchicago.edu/groups/84479174-69a8-4241-bdb4-3e442202895f/annotations
https://manifold.bfi.uchicago.edu/groups/23d4a63e-64fc-4787-aeda-4d6fc005ec82/annotations
https://manifold.bfi.uchicago.edu/groups/5bfeffa0-3f31-4c1f-a931-078ffd169b59/annotations
https://manifold.bfi.uchicago.edu/groups/236ef4ed-ab79-4ddb-9d48-644a24a5abe9/annotations