At times a noun can be replaced with a pronoun.
Be careful to use a singular pronoun with a singular noun in your writing.
What does the noun "incorporation" mean?
The verb does not agree with its subject unless the latter is a personal pronoun; when the subject is a noun the verb is put in the third person singular; thus carant, " they love," can take a pronominal subject - carant hwy, " they love "; but " the men love " is car y dynion (not carant y dynion, which can only mean " they love the men ").
When a noun comes first, it is followed by a relative pronoun, thus, Dafydd a brynodd lyfr yno, which really means " (it is) David who bought a book there," and is never used in any other sense in the spoken language, though in literary Welsh it is used rhetorically for the simple statement which is properly expressed by putting the verb first.