Word-specific information for recognized words. Word
information is only included in the response when certain request
parameters are set, such as enable_word_time_offsets.
Output only. Time offset relative to the beginning of the
audio, and corresponding to the end of the spoken word. This
field is only set if enable_word_time_offsets=true and
only in the top hypothesis. This is an experimental feature
and the accuracy of the time offset can vary.
