question: one had to be hadamard to dare to undertake the exposition of all of [ poincare 's] immense work which dealt with so many different areas, and to finish it in one summer.
Capitalize this past sentence correctly.
A: One had to be Hadamard to dare to undertake the exposition of all of [ Poincare 's] immense work which dealt with so many different areas, and to finish it in one summer.

question: of eu citizens play sport at least once a week.
Capitalize this past sentence correctly.
A: of EU citizens play sport at least once a week.

question: this is a very elegant "dragon" fish, also known as "fish feng shui".
Capitalize this past sentence correctly.
A: This is a very elegant "dragon" fish, also known as "fish Feng Shui".