 
 <prompt> How the self-executing treaty dey work? Based on di last question, write something wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Treaties fit fit be seen as 'self-executing', in the sense say just by becoming a party, the treaty and all the things wey e dey oblige go dey work. Other treaties fit no be self-executing and fit need 'implementing legislation'—na change for the domestic law of a state party go make am fit to fulfill treaty obligations. An example of treaty wey go need dis kind legislation fit be one wey go mandate local prosecution by a party for particular crimes. 