Language is python

1. Define a variable my_string.
2. Write an if statement to check if my_string is indeed a string, and then determine if my_string is empty, a single character, a word, or a sentence (defined here to be a collection of words, not a proper sentence in the grammatical sense).
3. In the case that my_string is a sentence, check if it contains the word of.
4. Print the result to the screen, e.g., The provided string is word or The provided string is a sentence without of in the sentence.