input: There is no scientific proof however that gelatine should be able to strengthen the nails
fixed: There is no scientific proof, however, that gelatine should be able to strengthen the nails.

input: a more complicated relationship than occurred in Example 3 for exports
fixed: a more complicated relationship than occurred in Example 3 for exports.

input: The area was used as a burial ground for 500 years A visit to the tomb of Tut Ankh Amon requires an extra ticket
fixed: The area was used as a burial ground for 500 years. A visit to the tomb of Tut Ankh Amon requires an extra ticket.

input: Not 3 wands in one spin mind you but rather in a sitting
fixed:
Not 3 wands in one spin mind you - but rather in a sitting.