A same meaning or not problem:
The groined vaulting of the roof is visible in the choir and the right transept , while the rest of the church has a wooden roof .
In the choir and in the right transept the cross vault of the roof is visible , while the rest of the church has a wooden roof .
****
[A]: no

A same meaning or not problem:
Vonberg studied at Imperial College then joined the Cavendish Laboratory in 1945 where he worked with Martin Ryle .
Vonberg studied at Imperial College and joined the Cavendish Laboratory where he worked with Martin Ryle in 1945 .
****
[A]: yes

A same meaning or not problem:
teaches the Doctor , with the help of Poynesia , to teach him the animal languages . After Polynesia gets Tommy
With the help of Poynesia , the doctor teaches him to teach animal languages after Polynesia Tommy
****
[A]: no

A same meaning or not problem:
Ma Smith is a widow with two children of her own : Will and Dora Smith .
Ma Smith is widow with two of her own children : Will and Dora Smith .
****
[A]:
yes