Example to breakdown rule into atomic level:

"The credit card used to guarantee a rental must belong to one of the authorized drivers; and this driver must sign the rental agreement. Other drivers must sign an additional drivers authorization form"

The above rule can be broken down to following rules:

R1: The credit card used to guarantee a rental must belong to one of the authorized drivers

R2: driver must sign the rental agreement

R3: Other drivers must sign an additional drivers authorization form

An other example in the insurance industry for a claim processing application: