user: Question: What is the year of the first appearance of the black knights, who had less than 1 finals appearances?
Columns: ['Corps Name', 'Number of Finals Appearances', 'Year of First Appearance', 'Year of Most Recent Appearance', 'All Years of Finals Appearances']
Types: ['text', 'real', 'real', 'real', 'text']
Sample row: ['Santa Clara Vanguard', 42.0, 1972.0, 2013.0, '1972–2013']
SQL:

assistant: SELECT "Year of First Appearance" FROM "Table" WHERE "Corps Name" = 'black knights' AND "Number of Finals Appearances" < 1.0;