if the challenge confirms the presence of an adverse food reaction, the next step is to perform a provocation diet trial: going back to the elimination diet, begin by adding a single ingredient to the diet.

How would the previous sentence be correctly capitalized?
Answer: If the challenge confirms the presence of an adverse food reaction, the next step is to perform a provocation diet trial: going back to the elimination diet, begin by adding a single ingredient to the diet.
relax in your private hydromassage bathtub in the en-suite bathroom.

How would the previous sentence be correctly capitalized?
Answer: Relax in your private hydromassage bathtub in the en-suite bathroom.
get ready for a cool and fun game. match the fruits according to the customer...

How would the previous sentence be correctly capitalized?
Answer: Get ready for a cool and fun game. Match the fruits according to the customer...
hotel wawel in ul. poselska is a renovated old palace, and the room is ready.

How would the previous sentence be correctly capitalized?
Answer: Hotel Wawel in ul. Poselska is a renovated old palace, and the room is ready.