generator --> machine

machine--> device

device--> accessory

accessory --> peripheral

peripheral --> input

input--> Energy

Energy --> Power

Power --> Authority

Authority--> Decision

Decision --> Criteria

Criteria --> Requirments

Requirments--> necessity

necessity--> need

need --> coffee

coffee--> Morning

Morning > Duvet

Duvet-->bedspread

bedspread-->cotton

cotton--> clothing

clothing -- > wear