The term lecture demonstration is identified in base64 scheme by the sequence bGVjdHVyZSBkZW1vbnN0cmF0aW9u, while the MD5 signature is equal to b71489a880140ea94f3af763de658bf2. The ASCII encoding of lecture demonstration in hexadecimal notation is 6c6563747572652064656d6f6e7374726174696f6e.