Possible Clues:

• World Central Kitchen, e.g.: Abbr
• Greenpeace, for one
• The Carter Center, e.g., briefly
• The Nature Conservancy, e.g., briefly
• Oxfam or Greenpeace, for short
• Abbreviated term for a third sector organisation
• Gp. such as Amnesty International
• Oxfam or Mercy Corps, e.g., in brief
• CARE, e.g
• Habitat for Humanity, e.g., for short