QUESTION: Fix punctuation: These claims of Poincar were eventually shown to be correct
ANS: These claims of Poincare were eventually shown to be correct.

QUESTION: Fix punctuation: Love is not only meant for humans Here a cute Fox couple decided to celebrate
ANS: Love is not only meant for humans, Here a cute Fox couple decided to celebrate...

QUESTION: Fix punctuation: The red sandstone building with its 133foot spire side aisles and clerestory windows is designed in an English Country Church style
ANS: The red sandstone building with its 133-foot spire, side aisles, and clerestory windows, is designed in an English Country Church style.

QUESTION: Fix punctuation: A fit body provides selfconfidence and popularity among the opposite sex Moreover studies indicate that elderly men who regularly exercise their muscles will delay the agerelated reduction of the production of the male sex hormone testosterone
ANS:
A fit body provides self-confidence and popularity among the opposite sex. Moreover, studies indicate that elderly men who regularly exercise their muscles will delay the age-related reduction of the production of the male sex hormone testosterone.