So let's call this exon number one, exxon number two and exxon number three. Now first we basically create these two modifications. We cap our five end and we basically add the polya tail on the other end of that particular mRNA molecule. And what this basically allows that mRNA molecule to do is it prevents the mRNA molecule from being broken down and it also allows it to basically reach that final destination. And we'll discuss more about that in a future lecture. Now once we cap this end and once we add that tail the next process is the splicing process.