这里的in what 是什么成分能够放到is 的前面?谢谢解答

问题描述:

这里的in what 是什么成分能够放到is 的前面?谢谢解答
JK Rowling, the Harry Potter author, has signed a publishing deal with Little, Brown, to release her first ever novel for adults, (in what) is set to become one of the most anticipated book launches in years.

这里的what指的是a publishing,是一个定语从句.in what 就是在这个出版物中publishing应该只是deal的限定词,意为出版合同.所以根据从句的内容我觉得what是不是代表deal的意思?嗯,我觉得可以这么理解。不好意思,我之前看错了。