Experiment is related to Procedure. Procedure is related to Pray. Pray is related to Communication. 
Sidewalk is related to Path. Path is a synonym of Route. Route can be used for Planning. 
Experiment <--RelatedTo--> Procedure <--RelatedTo--> Pray <--RelatedTo--> Communication 
Sidewalk <--RelatedTo--> Path <--Synonym--> Route --UsedFor--> Planning 