user: Question: What is the unit of the non-mammal from Greenland?
Columns: ['Name', 'Status', 'Authors', 'Unit', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Delectosaurus', 'Valid', 'Kurkin', 'Vyazniki Assemblage', 'Russia']
SQL:

assistant: SELECT "Unit" FROM "Table" WHERE "Location" = 'Greenland';