Had the Immigration Officer known on arrival that asylum was intended , then he would not have granted entry as a visitor .
If the immigration official had known that asylum was intended on arrival , he would not have granted entry as a visitor .

Are these two sentences paraphrases of each other?
yes

German pillow sizes are 80 80 cm ( older ) or 40 80 cm ( newer ) .
The pillow sizes are 80 80 cm ( older ) or 40 80 cm ( newer ) .

Are these two sentences paraphrases of each other?
yes

Sometimes already allocated codes were reused or the previously spared x00 codes were assigned .
Sometimes already assigned codes were reused or the x00 codes assigned previously were spared .

Are these two sentences paraphrases of each other?
no

The main - songwriting - unit for the band formed Jon Jon Jovi and lead singer Sambora .
Sambora and lead singer Jon Bon Jovi formed the main songwriting unit for the band .

Are these two sentences paraphrases of each other?
no