In 1923 Jacob Blaustein and his son Louis Blaustein sold a half interest in their American Oil Company to Pan American in exchange for a guaranteed supply of oil .
In 1923 , Louis Blaustein and his son , Jacob Blaustein , sold half a share of their American Oil Company to Pan American in return for a guaranteed oil supply .

Are these two sentences paraphrases of each other?
no

On the prototype the wheels were spatted , but these were removed on production aircraft .
The wheels were sprayed on the prototype , but these were removed on production aircraft .

Are these two sentences paraphrases of each other?
no

The Data Definition Facility provides a persistent function for semantic artefacts such as collections and indexes in XQuery or JSONiq programs .
The Data Definition Facility provides a semantic for persistent artifacts such as collections and indexes in XQuery or JSONiq programs .

Are these two sentences paraphrases of each other?
no

This research has frequently led him to South Africa , where he concentrates on the Royal Bafokeng Nation , as well as Brazil and Jamaica .
This research has taken him frequently to Jamaica , where he focuses on the Royal Bafokeng Nation as well as Brazil and South Africa .

Are these two sentences paraphrases of each other?
no