Add punctuation: Holiday home Built in 1969 Renovated in 1992 Situated on a 725 qm site
A: Holiday home. Built in 1969. Renovated in 1992. Situated on a 725 qm site.

Add punctuation: As the beings had only very elementary intellectual talents they could not possibly have been helped by a hundred per cent cosmic science
A: As the beings had only very elementary intellectual talents, they could not possibly have been helped by a hundred per cent cosmic science.

Add punctuation: In this work Heron states that vision results from light rays emitted by the eyes
A:
In this work, Heron states that vision results from light rays emitted by the eyes.