user: Question: What is the number of career caps for a full back, when tour Apps is smaller than 29?
Columns: ['Name', 'Tests', 'Club', 'Career caps', 'Tour Apps', 'Position']
Types: ['text', 'real', 'text', 'real', 'real', 'text']
Sample row: ['A.W. Ross', 5.0, 'Sydney University', 20.0, 29.0, 'Full Back']
SQL:

assistant: SELECT "Career caps" FROM "Table" WHERE "Position" = 'full back' AND "Tour Apps" < 29.0;