I want to know the answer to the following question:
What apparitions reportedly took place in 1917?
All the background I'm provided with is that "Tourist hotspots in Portugal are Lisbon, Algarve, Madeira, Porto and the city of Coimbra, also, between 4-5 million religious pilgrims visit Fátima each year, where apparitions of the Blessed Virgin Mary to three shepherd children reportedly took place in 1917.". Is that enough to answer the question?
Answer: yes