Economy is related to Flight. Flight is a synonym of Flying. Flying is related to Spark. Spark is related to Tiny. 
Moment is related to Little. Little is related to Monkey. you are likely to find Monkey in/at/on Group. Group is related to Sheep. 
Economy <--RelatedTo--> Flight <--Synonym--> Flying <--RelatedTo--> Spark <--RelatedTo--> Tiny 
Moment <--RelatedTo--> Little <--RelatedTo--> Monkey --AtLocation--> Group <--RelatedTo--> Sheep 