Add punctuation: Cheapest hotels hotel deals and budget travel in AixenProvence France Paris Instant Booking
A: Cheapest hotels, hotel deals, and budget travel in Aix-en-Provence, France - Paris Instant Booking

Add punctuation: The presence of strontium or barium together with chromium determined with an XRF instrument may indicate the presence of anticorrosive paints based on hexavalent chromium but it has not been examined whether similar results would be obtained if the elements are present as alloying elements in steel
A: The presence of strontium or barium together with chromium, determined with an XRF instrument, may indicate the presence of anticorrosive paints based on hexavalent chromium, but it has not been examined whether similar results would be obtained if the elements are present as alloying elements in steel.

Add punctuation: Looking which airport for Aubervilliers
A:
Looking which airport for Aubervilliers?