text-nli: Output if sentence 2 Entails statement 1 or is Neutral - 
sentence 1: It did not demonstrate design stability until about 3 years after it held its critical design review.
sentence 2: The design stability was in doubt during the 3 years.
<text> NEUTRAL
It did not demonstrate design stability until about 3 years after it held its critical design review.
The design stability was in doubt during the 3 years.