Table: daytona_500_broadcasts
Columns: year
network
lap_by_lap
color_commentator_s
pit_reporters
host
ratings
viewers

Question: What was the rating in 1997?
SQL: SELECT "ratings" FROM daytona_500_broadcasts WHERE "year" = 1997

Question: Who narrated the lap-by-lap to a 13.4 million audience?
SQL: SELECT "lap_by_lap" FROM daytona_500_broadcasts WHERE "viewers" = '13.4 million'