Task: Pos Tagging
Input (English): Sentence: On the other hand , some unwed mothers had had so much work and responsibility imposed on them at an early age , and had thus had so little freedom or opportunity {{ to }} develop autonomy and initiative , that their work and responsibilities became dull and unrewarding burdens -- to be escaped and rebelled against through fun and experimentation with forbidden sexual behavior . 
Word: to
Output (English): PRT