Text: If you have the time, try to visit St. Peter's Basilica and the Vatican Museums on separate days to avoid fatigue and visual overload.
Entailment: Try to visit St. Peter's Basilica and the Vatican Museums, if you have the time, but do it on separate days, if you want to avoid fatigue and visual overload.
Contradiction: If you have the time, don't waste it on visiting St. Peter's Basilica or Vatican Museums, they are not worth it.