Table: airport_traffic_9
Columns: items
2008_q1
2008_q2
2008_q3
extrapol_08
year_2007

Question: Name the year 2007 for 668 2008-q1
SQL: SELECT "year_2007" FROM airport_traffic_9 WHERE "2008_q1" = '668'

Question: Name the year 2007 for 668 being 2008-q1
SQL: SELECT "year_2007" FROM airport_traffic_9 WHERE "2008_q1" = '668'