The 381st Bombardment Group was formed on the Pyote Air Force Base and was assigned to Ridgewell Airfield in Essex , England , around six miles from Haverhill .
The 381st Bombardment Group was formed at Pyote Air Force Base and was assigned to Ridgewell Airfield in Essex , England , about six miles from Haverhill .

Are these two sentences paraphrases of each other?
yes

The idols are available locally and they are made of very old stone .
The idols are locally available and they are made of the very old stone .

Are these two sentences paraphrases of each other?
yes

Only one percent of natural diamonds are of this kind , and most are blue to grey .
Only one percent of the blue diamonds are of this type , and most are grey to natural .

Are these two sentences paraphrases of each other?
no

Jacopo Silvestri ( 16th -- 15th century ) was an Italian cryptographer and author .
Jacopo Silvestri ( 16th century -- 15th century ) was an Italian cryptographer and author .

Are these two sentences paraphrases of each other?
yes