1. Music is great with some excellent songs which are etched in everybody 's memory forever .
2. Music is great with some excellent songs , which are etched forever in everyone 's memory .

yes

1. The province of Puerto Inca is the largest of the eleven provinces in the Huanuco region in Peru .
2. The Huanuco Region is the largest of eleven provinces of the Puerto Inca Province in Peru .

no

1. The first integer formula 177 , for which the Formula 178 has the formula 179 rank , is the Formula 180 .
2. The first integer formula _ 177 for which formula _ 178 has rank formula _ 179 is formula _ 180 .
yes