Watch is related to Measure. Measure is related to Big. Big is related to Tank. 
Control is related to Ruling. Ruling is a synonym of Govern. Govern is a synonym of Regulate. 
Watch <--RelatedTo--> Measure <--RelatedTo--> Big <--RelatedTo--> Tank 
Control <--RelatedTo--> Ruling <--Synonym--> Govern <--Synonym--> Regulate 