source: [lemma=importance] [tag=TO] [□=□]
destination: [lemma=importance] [tag=TO] [word=□]
spec: The first component is the pulse , followed by pid and rank . At least 66 sites in the region host sea turtles and / or migratory birds and in total more than 52 % of the Ramsar sites in the region are of great importance to various migratory species .