premise: NASA's Saturn exploration spacecraft, Cassini , has discovered an atmosphere about the moon Enceladus . This is the first such discovery by Cassini, other than Titan , of the presence of an atmosphere around a Saturn moon.
hypothesis: Enceladus was discovered by NASA.
reason: My statement is neither correct nor incorrect as it's not stated anywhere who discovered Enceladus. Only that NASA's exploration craft Cassini discovered an atmosphere on Enceladus. The system is fooled because, I only used words out of the original statement and I didn't add any words, I only removed/didn't use all of them. The system doesn't understand how the meaning changes when you remove certain words. 