Simplify the following text for a Grade 11 native English-speaking person.
Original: Under the FIA rules , `` the constructor of an engine or chassis is the person ( including any corporate or unincorporated body ) which owns the intellectual rights to such engine or chassis . ''
Simplified: Under Article 6.3 of the FIA Sporting Regulations , `` the constructor of an engine or chassis is the person ( including any corporate or unincorporated body ) which owns the intellectual rights to such engine or chassis . ''