text-nli: Output if sentence 2 Entails statement 1 or is Neutral - 
sentence 1: Around 1000 b.c. mainland Greece entered a  dark age  of limited achievements, but not so the Ionians, who developed an outstanding civilization.
sentence 2: Though Greek achievement declined around 1000 b.c., achievement by the Ionians did not decline. 
<text> ENTAILMENT
Around 1000 b.c. mainland Greece entered a  dark age  of limited achievements, but not so the Ionians, who developed an outstanding civilization.
Though Greek achievement declined around 1000 b.c., achievement by the Ionians did not decline. 