Problem: (1) Roxus supported the international bands Poison and Bon Jovi on their respective Australian tours in 1989 .
(2) In 1989 Roxus supported respective Australian bands , Poison and Bon Jovi , on their international tours .

Do (1) and (2) mean the same thing?
A: no

Problem: (1) William died in 1859 and Elizabeth died the following year .
(2) In 1859 , William and Elizabeth died the following year .

Do (1) and (2) mean the same thing?
A: yes

Problem: (1) He was married to Madi Hedd , who acted together in Australia for six years before returning to Britain in 1957 .
(2) He was married to Madi Hedd . They acted together in Britain for six years before returning to Australia in 1957 .

Do (1) and (2) mean the same thing?
A: no

Problem: (1) Old Polish is the time in the history of the Polish language between the 16th and 9th centuries , followed by the middle Polish language .
(2) Old Polish language is the period in the history of the Polish language between the 16th and the 9th centuries , followed by the Middle Polish language .

Do (1) and (2) mean the same thing?
A:
yes