Call is related to Encounter. Encounter is a synonym of Meet. 
Coordinate is related to Point. Point is related to Activity. Activity is related to Protest. Protest is related to Demonstration. 
Call <--RelatedTo--> Encounter <--Synonym--> Meet 
Coordinate <--RelatedTo--> Point <--RelatedTo--> Activity <--RelatedTo--> Protest <--RelatedTo--> Demonstration 