Complex sentence: The consecration of Russia was reportedly requested by the Virgin Mary, in a series of Marian apparitions known as Our Lady of Fátima, to three visionaries in 1917 and later in 1925 in Pontevedra, Portugal to a single remaining Fatima visionary.
Split into simpler sentences: The consecration of Russia was reportedly requested by the Virgin Mary, in a series of Marian apparitions known as Our Lady of Fátima, to three visionaries in 1917. It was also reported in further apparitions in 1925 in Pontevedra, Portugal to a single remaining Fatima visionary.