user: Question: Which Field has a Discovery of NA, and an Operator(s) of WOC, and a Geological Trend of Western
Columns: ['Field', 'Geological Trend', 'Reserves', 'Discovery', 'Operator(s)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Samah field', 'Western', 'Gof', 'NA', 'WOC']
SQL:

assistant: SELECT "Field" FROM "Table" WHERE "Discovery" = 'NA' AND "Operator(s)" = 'WOC' AND "Geological Trend" = 'Western';