Complex sentence: Also, there will be carefully woven crosses and other symbols made from palm fronds and roses and a procession at the beginning of the service, during which at some point, the priest will take an olive branch and splash holy water on the faithful.
Split into simpler sentences: Also, there will be carefully woven crosses and other symbols made from palm fronds and roses. There will normally be a procession at the beginning of the service and at some point, the priest will take an olive branch and splash holy water on the faithful.