Please capitalize where necessary: but isn't that the point of the exercise?"
A: But isn't that the point of the exercise?"

Q: hi, my name is 18diana and i am 19 years.

A: Hi, my name is 18Diana and I am 19 years.

Q: room service is available.
A: Room service is available.

Problem: this is one model of "the jewish problem" which has not been given so much attention in the last century, when the conspiracy model took over and now kevin macdonald's model of group strategy, whereas it was the original model since before christ.
Can you repeat this sentence, but capitalize it?
Answer: This is one model of "The Jewish Problem" which has not been given so much attention in the last century, when the conspiracy model took over and now Kevin MacDonald's model of group strategy, whereas it was the original model since before Christ.

Text: this type and size of production has big demands in terms of water and energy, which means that novo nordisk benefits greatly from being part of the kalundborg symbiosis, where there is easy access to energy and water, as well as good opportunities to develop the production to make it even more sustainable.

Correct capitalization: This type and size of production has big demands in terms of water and energy, which means that Novo Nordisk benefits greatly from being part of the Kalundborg Symbiosis, where there is easy access to energy and water, as well as good opportunities to develop the production to make it even more sustainable.

Please capitalize where necessary: however the five happy years came to an end with the outbreak of the first world war.
A:
However the five happy years came to an end with the outbreak of the First World War.