Please capitalize where necessary: knuth has already made a timely and great contribution.
A: Knuth has already made a timely and great contribution.

Q: there was a farm by the name vestergaard in his home parish, but it is still unknown whether he lived on that farm at some point. we do however know that he was a tenant farmer at the farm gunildshj from around the turn of the century (at the latest) until his death.

A: There was a farm by the name Vestergaard in his home parish, but it is still unknown whether he lived on that farm at some point. We do however know that he was a tenant farmer at the farm Gunildshj from around the turn of the century (at the latest) until his death.

Q: statement of potentials of resources and savings
A: Statement of potentials of resources and savings

Problem: it was the secret friend of the prime minister through ten years, a polish doctor by the name of marek stawowy, who suddenly came forward.
Can you repeat this sentence, but capitalize it?
Answer: It was the secret friend of the prime minister through ten years, a Polish doctor by the name of Marek Stawowy, who suddenly came forward.

Text: i am a woman, 42 years old, seeking a man age from 30 till 50

Correct capitalization: I am a woman, 42 years old, seeking a man age from 30 till 50

Text: description: male lapwing in meadow

Correct capitalization:
Description: Male lapwing in meadow