Spark is related to Tiny. Tiny is a synonym of Small. Small is related to Cart. Cart is related to Wagon. 
Tail is a type of Top. Top is related to High. High is related to Tide. Tide is related to Laundry. 
Spark <--RelatedTo--> Tiny <--Synonym--> Small <--RelatedTo--> Cart <--RelatedTo--> Wagon 
Tail --IsA--> Top <--RelatedTo--> High <--RelatedTo--> Tide <--RelatedTo--> Laundry 