Task: Text Matching
Input (English, Spanish): English: I became convinced of this in Sarajevo when I had to negotiate the periodic exchanges of prisoners which accompanied each successive ceasefire agreement, none of which unfortunately lasted, between the parties to the conflict. 
 Spanish:Me convencí de ello en Sarajevo, cuando debía negociar, entre las partes en conflicto, los intercambios periódicos de prisioneros, que acompañaban los sucesivos acuerdos de alto el fuego, que desgraciadamente nunca duraban mucho.
Output (English): Yes