Task: Text Simplification
Input (English): baduhennna is solely attested by tacitus ' annals where tacitus records that a grove in frisia was dedicated to her , and that near this grove 900 roman prisoners were killed in 28 ce.
Output (English): baduhennna is only -lrb- certified / promised -rrb- by understood -lrb- without words being spoken -rrb- us ' recorded events , where understood -lrb- without words being spoken -rrb- us records that a group of trees in frisia was dedicated to her , and that near this group of trees 900 roman prisoners were killed in 28 ce.