Split and simplify the following sentence while retaining its full meaning: Whereas under the Voluntary Restraint Agreements concluded with the European Economic Community on mutton , lamb and goatmeat or live sheep and goats , the non-member countries in question undertook , in exchanges of letters , to limit the amount of their exports to certain Community markets considered to be sensitive areas; whereas those undertakings , however , expire on 31 March 1984.
 Simplified version:
Third countries which have signed a voluntary restraint agreement in the sheepmeat and goatmeat or live sheep and goat sector with the European Economic Community have signed an exchange of letters to limit their exports to certain Community markets that are considered sensitive areas . However , this obligation is limited to March 31 , 1984 .