math-nli: Output if sentence 2 Entails statement 1 or Contradicts statement 1 - 
sentence 1: Paige had 11 songs on her mp3 player. If she deleted 9 old songs from it and then added 8 new songs, 
sentence 2:  Paige has 10 songs on her mp3 player.
<equate> (((11.0+8.0)-9.0), 10)
Paige had 11 songs on her mp3 player. If she deleted 9 old songs from it and then added 8 new songs, 
 Paige has 10 songs on her mp3 player.