Sarah I don't know
Sarah I do know
n:prop pro:sub mod v
sarah i don't know .
s ɛ ɹ ə WORD_BOUNDARY aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY
s a r a h WORD_BOUNDARY i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY