Hi SEOanalytics
The better a sentence is written with contextually strong keywords intertwined throughout, the more elegant it reads and the more professional it looks. Just compare reading Oscar Wilde to JK Rowling. Wilde's writing is poetic and richly written with proselike descriptions, fabulously florid verbs, alliteration and dialogue.
For me, it's important not to repeat nouns. for example 'The singer stalked the stage' (Subject, Predicate (verb), noun), then the singer leapt into the audience, smashing his face bloody on the ground'. You would change the second 'singer' to 'he' or 'front man'. There are a million examples and this is a very obvious way of using semantics.
There is an art to good writing and the Subject/Predicate/Object form is just a discipline to ensure you write in a clean and precise way. It's also good for SEO as it ensures that the correct keywords are used in the right way, using the correct tense and not stuffed.
One could imagine that if my sentence was targetting the keyword 'singers' then the use of alternative, or semantic would enhance the SEO value of the piece.
There is rather a wonderful video here: https://www.brightstorm.com/english/grammar/sentence-basics/subject-predicate-and-objects/
But of course, I have tried to explain the practical use of this in relation to SEO. If we didn't write in this way then the piece would simply be a list of interconnected words or bullet points.
I hope that helps,
Regards
Nigel