1. James is very tall. James has looked into the rejected proposal.
James, who is very tall, has looked into the rejected proposal
2. The man is standing on the corner. The man is an undercover cop.
The man who/that is standing on the corner is an undercover cop.
3. My sister is interested in science. She has just moved to Silicon Valley.
My sister, who is interested in science, has just moved to Silicon Valley.
4. The wildlife park is very famous. Two people were attacked by lions in the wildlife park.
Two people were attacked in the wildlife park which/ that is very famous.
5. His wife cried a lot on the day. He left for Afghanistan.
His wife cried a lot on the day when he left for Afghanistan.