Table: race_results_81
Columns: year
team
class
laps
pos

Question: What is the class of the team when less than 6 laps were completed?
SQL: SELECT "class" FROM race_results_81 WHERE "laps" < 6

Question: What is the year when Scuderia Lancia Corse competed?
SQL: SELECT COUNT("year") FROM race_results_81 WHERE "team" = 'scuderia lancia corse'

Question: What was the position of the teams before 1973?
SQL: SELECT "pos" FROM race_results_81 WHERE "year" < 1973