Take the following as truth: At six o'clock, Miss Howard, disguised as Alfred Inglethorp, enters the chemist's shop, with her story about a dog, obtains the strychnine, and writes the name of Alfred Inglethorp in John's handwriting, which she had previously studied carefully. 
Then the following statement: "Miss Howard spent three weeks carefully studying John's handwriting. " is true, false, or inconclusive?
Answer: Inconclusive