user: Question: What was the position of the teams before 1973?
Columns: ['Year', 'Team', 'Class', 'Laps', 'Pos.']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [1972.0, 'Team Schnitzer Motul', 'T 3.0', 70.0, 'DNF']
SQL:

assistant: SELECT "Pos." FROM "Table" WHERE "Year" < 1973.0;