Sentence meaning score

I wish to some kind of meaning score against each English sentence. Is it possible to that by any means?
My use case is as follow:
sentence-1 : During the pendency of the proceedings, applications for impleadment were
meaning_score: 6/10 (lets say)

Sentence-2:allowed on 4 March 2011 and the operation of release orders passed by the
Union on 19 January 2011 was stayed.
Meaning_score: 7/10

But when I combine them I get a new sentence which has higher meaning score
Combined sentence: During the pendency of the proceedings, applications for impleadment were allowed on 4 March 2011 and the operation of release orders passed by the Union on 19 January 2011 was stayed.
Meaning score: 10/10

Is it possible to achieve something like this
@guillaumekln

Maybe a language model can help for this?