Bishop is a type of Weapon. Bishop is part of Conference. you are likely to find Confusion in/at/on Conference. Confusion is related to Mixed. 
Observation is a synonym of Catch. Catch is a type of Delay. Hesitate is a type of Delay. 
Weapon <--IsA-- Bishop --PartOf--> Conference <--AtLocation-- Confusion <--RelatedTo--> Mixed 
Observation <--Synonym--> Catch --IsA--> Delay <--IsA-- Hesitate 