generate questions: For the third straight season, the number one seeds from both conferences met in the Super Bowl. The Carolina Panthers became one of only ten teams to have completed a regular season with only one loss, and one of only six teams to have acquired a 15–1 record, while the Denver Broncos became one of four teams to have made eight appearances in the Super Bowl. The Broncos made their second Super Bowl appearance in three years, having reached Super Bowl XLVIII, while the Panthers made their second Super Bowl appearance in franchise history, their other appearance being Super Bowl XXXVIII. Coincidentally, both teams were coached by John Fox in their last Super Bowl appearance prior to Super Bowl 50.
Who coached each Super Bowl 50 participant in their most recent Super Bowl appearance prior to Super Bowl 50? {sep_token} How many NFL teams have finished the regular season with one loss? {sep_token} How many NFL teams have gone 15-1 in one season? {sep_token} Which team in Super Bowl 50 had a 15-1 record? {sep_token} What was the last Super Bowl the Broncos participated in? {sep_token} Who was the head coach of the Broncos in Super Bowl XLVIII? {sep_token} What was the number of times the Denver Broncos played in a Super Bowl by the time they reached Super Bowl 50? {sep_token} How many NFL teams have had only one loss by the end of a regular season? {sep_token} What was the first Super Bowl that the Carolina Panthers played in? {sep_token} How many teams can boast a 15–1 regular season record? {sep_token} What seed was the Carolina Panthers? {sep_token} What seed was the Denver Broncos? {sep_token} Prior to Super Bowl 50, when were the Broncos last there? {sep_token} Prior to Super Bowl 50, when were the Carolina Panthers last there? {sep_token} How many teams have had a 15-1 record for the regular season? {sep_token} How many games did the Panthers lose in the regular season before Super Bowl 50? {sep_token} How many teams up to Super Bowl 50 have been to the championship game eight times? {sep_token} Before Super Bowl 50, what was the coach's name that coached both teams for their last Super Bowl appearances? {sep_token}