user: Question: What is the total number in class for the Whitehaven Coal?
Columns: ['Owner', 'Class', 'Number in class', 'Road numbers', 'Built']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['SCT Logistics', 'SCT class', 15.0, 'SCT001-SCT015', '2007-2008']
SQL:

assistant: SELECT SUM("Number in class") FROM "Table" WHERE "Owner" = 'Whitehaven Coal';