Rules governing formation of adjectival and genitive modifications for Noun-Phrase

Question

The following was observed in sawa's answer to "Can ごとに be replaced by それぞれ in this question?":

　◯　正月はそれぞれの家が門松を立てる。

　×　木村さんはそれぞれの会う人に挨拶している。

　◯　木村さんは会う人それぞれに挨拶している。

それぞれの会う人 is said to be an ungrammatical construction because it is modified from outside of the relative clause. What are the rules for modifying noun-phrases?

I had perceived それぞれの会う人 as a XのY construction i.e. I perceived 会う人 as a noun-equivalent. Does this imply that a relative clause construction cannot act in all ways that a noun can?

Also, are the following constructions valid?

• [な-adjective] + [noun-phrase from relative clause construction]

• [い-adjective] + [noun-phrase from relative clause construction]

Answer 1

A relative clause construction cannot act in all ways that a noun can. Adjectival modification, genitive noun phrase, and relative clause are all different things, and behave differently syntactically.

Assuming that a relative clause attaches to a noun phrase and creates a noun phrase, whose categorical status is the same, is correct.

The problem is with adjectival modification and genitive phrases. There is a need to distinguish between a noun and a noun phrase for them.

Answer 2

FWIW, I just had a look in Shogakukan's Progressive Japanese-English Dictionary entry for それぞれ. In all the sample uses where それぞれ came right after the initial は clause, the それぞれ was referring to the topic. This agrees with my own subjective experience hearing this term in use. Excerpted examples (emphasis original):

• 少年たちはそれぞれ犬を飼っている　 Each boy [Each of the boys] keeps a dog. / The boys each keep a dog.
• 子供たちはそれぞれの席についた　 Each of the children took his (own) seat.
• 人はそれぞれの長所がある　 Everyone has his own strong point.
• トムと太郎とフィリップはそれぞれ英語,日本語,フランス語を話した　 Tom, Taro, and Philip spoke English, Japanese, and French respectively.

As such, 「木村さんはそれぞれの会う人に挨拶している。」 wouldn't work because the それぞれ in the middle there refers to 木村さん, not the 会う人. This appears to be specific to how それぞれ is used, and is thus outside the scope of your question about modifying nouns.