In this exercise, you will need to change Warren Buffett's known saying. First create a variable ISAY and assign it the original saying value. Then re$-$assign it with a new changed value using the string operations and following the $4$ defined changes: Change$1$: replace the first occurrence of 'snow' with 'foot'. Change$2$: delete the second occurrence of 'snow'. Change$3$: replace 'finding' with 'getting'. Change$4$: delete all characters following 'wet'. Tip: One way to implement Change$4,$ if to find the index of $\text{'}$w$\text{'}$ in the word 'wet' and then use substring extraction.