Picnic with Colleagues

Five colleagues, Grace, Chris, Gabriel, Tina and Nina, sit at a round table facing the centre, one per seat and with no other people at the table. The seating satisfies the following conditions:

• Grace does not sit next to Chris or Gabriel.
• Tina does not sit next to Gabriel.
• Nina does not sit next to Tina or Chris.

Tina is sitting immediately to the left of Grace. Who is sitting immediately to the right of Chris?