question: in the vineyard alain has seen how our meunier-grapes are busy changing colour.
Capitalize this past sentence correctly.
A: In the vineyard Alain has seen how our Meunier-grapes are busy changing colour.

question: the category which he will be competing is ornamental/celtic.
Capitalize this past sentence correctly.
A: The category which he will be competing is Ornamental/Celtic.

question: our name may be abbreviated to our airline designator code, or otherwise as shown on the confirmation/itinerary.
Capitalize this past sentence correctly.
A: Our name may be abbreviated to our Airline Designator Code, or otherwise as shown on the Confirmation/Itinerary.