 
 <prompt> Wetin be di oda options? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Similarly, di federal constitutional initiative allow citizens make dem put constitutional amendment to national vote, if 100,000 voters sign di proposed amendment within 18 months. Parliament fit add to di proposed amendment with a counter-proposal, and then voters gats show preference on top di ballot in case both proposals dey accepted. Constitutional amendments, whether introduced by initiative or for Parliament, gats be accepted by double majority of di national popular vote and di cantonal popular votes. 