it's Mark who is playing
it Mark who be play
pro:per n:prop pro:rel aux part
it's mark who is playing .
ɪ t s WORD_BOUNDARY m ɑː ɹ k WORD_BOUNDARY h uː WORD_BOUNDARY ɪ z WORD_BOUNDARY p l eɪ ɪ ŋ WORD_BOUNDARY
i t ' s WORD_BOUNDARY m a r k WORD_BOUNDARY w h o WORD_BOUNDARY i s WORD_BOUNDARY p l a y i n g WORD_BOUNDARY