This exam is a matter of life or death for me.

He is viewing that situation as a serious problem.

He views that situation as a problem.

No problem, I will do that job.

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

An old person was walking in the park.

An old person was playing with his grandchild in the park.

Thinking sensibly, that plan will not succeed.

Kamakura Udaijin is the courtesy name of Minamoto no Sanetomo.