X$661$: Title Case

Write a function toTitleCase $($s$)$ that returns the $s$ converted to Title Case. Title case has each word in the $s$ with its first letter in upper case. All other letters must be in lowercase.

Examples:

totitleCase$("$WHERE WE GO FROM HERE"$)$ "Where We Go From Here"

toTitleCase $("$i have a dream"$)$ "I Have A Dream"