As already said the answer is 1 - it say's
'Count all the F's in this sentence, ONLY ONCE.' this is the
only sentence because it ends with a full stop, the other part -
'FINISHED FILES ARE THE RE-SULT OF YEARS OF SCIENTIF- IC STUDY COMBINED WITH THE EXPERIENCE OF YEARS'
doesnt have a fullstop so its not a real sentence.
sentence meaning - (grammar) A grammatically complete series of words consisting of a
subject and
predicate, even if one or the other is implied, and typically beginning with a
capital letter and ending with a
full stop. (
http://en.wiktionary.org/wiki/sentence)
So that makes Xenoth and Wasahobo the winners.