Question: What is the fare to Kalamazoo during the time frame when Saginaw's was $481.39?
SQL: SELECT "Kalamazoo (AZO)" FROM "1-1637981-7" WHERE "Saginaw (MBS)" = '$481.39';

Question: When Lansing's fare is $433.59, what is the Detroit fare?
SQL: SELECT "Detroit (DTW)" FROM "1-1637981-7" WHERE "Lansing (LAN)" = '$433.59';

Question: At a Saginaw fare of $470.47, what is the fare to Lansing?
SQL: SELECT "Lansing (LAN)" FROM "1-1637981-7" WHERE "Saginaw (MBS)" = '$470.47';

Question: During the year when Lansing's fare is $433.59, what is the fare to Kalamazoo?
SQL: SELECT "Kalamazoo (AZO)" FROM "1-1637981-7" WHERE "Lansing (LAN)" = '$433.59';

Question: When Saginaw's fare is $470.47, what was the fare to Grand Rapids?
SQL: SELECT "Grand Rapids (GRR)" FROM "1-1637981-7" WHERE "Saginaw (MBS)" = '$470.47';

Question: When Grand Rapids's fare was $377.29, what is the fare to Detroit?
SQL: SELECT "Detroit (DTW)" FROM "1-1637981-7" WHERE "Grand Rapids (GRR)" = '$377.29';