what number is that
what number is that ?
w ʌ t WORD_BOUNDARY n ʌ m b ɚ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY ð æ t WORD_BOUNDARY
w h a t WORD_BOUNDARY n u m b e r WORD_BOUNDARY i s WORD_BOUNDARY t h a t WORD_BOUNDARY