Найдите в предложениях Объектный инфинитивный оборот

1. We want this article to show that progress in the American Fire service has been based on a series of historic catastrophes.
2. We want fire offices to have basic knowledge in all the fields of fire science.
3. They wanted the scientists to develop new extinguishing media dense and flexible at the same time.
4. We know this substance to be the best to cease the development of a fire.
5. We know this wetting agent to be the best one to interfere with flame propagation