Nod is related to Head. Head is related to Leader. Employer is a type of Leader. Employer is related to Company. 
Reminder is a type of Experience. Reminder is related to Alarm. Alarm is a type of Device. Sensor is a type of Device. 
Nod <--RelatedTo--> Head <--RelatedTo--> Leader <--IsA-- Employer <--RelatedTo--> Company 
Experience <--IsA-- Reminder <--RelatedTo--> Alarm --IsA--> Device <--IsA-- Sensor 