Simplify the following text for a Grade 7 native English-speaking person.
Original: In Japanese it is called Bakufu , meaning office in a tent , because Shogun had been originally military leader and he had his office with a tent in a battle field .
Simplified: Bakufu could also mean `` tent government '' and was the way the government was run under a shogun . The tent symbolized the field commander but also denoted that such an office was meant to be temporary .