make 3 examples forbidden sentences! help!!!

Do not walk on the grass, please!
(tolong jangan berjalan di atas rumput

When Descartes complained to the authorities of this unfair treatment, 4 the only reply was an order by which all mention of the name of Cartesianism, whether favourable or adverse, was forbidden in the university.

The exportation of works of art and antiquities from Italy without leave of the ministry is forbidden (though it has in the past been sometimes evaded)

- Do not walk on the grass!
- No smoking in this area.
- Do not enter, employee only.