A single egg weighs around and usually has 17 ribs , but sometimes 18 or less often 16 .
A single egg weighs about and usually has 17 ribs , but often 18 or less sometimes 16 .

Are these two sentences paraphrases of each other?
no

Despite the high employment rate and low unemployment , the community has a low poverty rate .
The community has a low poverty rate despite the low participation rate and high unemployment .

Are these two sentences paraphrases of each other?
no

When a bottle of vinegar is opened , mother of vinegar may develop . It is considered harmless and can be removed by filtering .
When a bottle of vinegar is opened , it can develop vinegar mother , which is considered harmless and can be removed by filtering .

Are these two sentences paraphrases of each other?
yes

The instruments of Embergher are remarkable , not only are the richness and abundance of tone unsurpassed , but also the intonation is perfect .
The instruments of Embergher are unsurpassed , not only are the richness and fullness of tone remarkable , but also the intonation is perfect .

Are these two sentences paraphrases of each other?
no