The FOG index is supposed to ignore proper nouns, but the script behind this page doesn't know how to recognize names, so you should edit them out before submitting your text. Enter a fair sample of 5 to 8 sentences. Clearly independent clauses should count as separate sentences, so introduce periods as necessary. For example, edit
"By and by I ran; I jumped; I hid."to read
"By and by I ran. I jumped. I hid."
Page design shamelessly stolen from the Pythonware Daily Python-URL because I like it.