1. What is the distinction between defining and non-defining relative clauses in the joined sentences about Alfred

1. What is the distinction between defining and non-defining relative clauses in the joined sentences about Alfred Hitchcock, a film director who made over fifty films?
2. When Mark phoned me today, it was mentioned that his father is shooting the advertisement. What is the classification of the relative clauses used in this sentence?
3. What are the defining and non-defining relative clauses in the statement about a shop that sells autographed memorabilia?
4. Please identify the defining and non-defining relative clauses in the sentence about meeting a girl whose mother is a well-known actress.
5. In the context of my mum giving me her wedding dress that belonged to her mother, can you differentiate the defining and non-defining relative clauses?
6. What are the defining and non-defining relative clauses in the sentence regarding Emily inviting me to a private concert with her mum, a singer?
7. Identify the defining and non-defining relative clauses in the statement involving Brad Pitt, a philanthropist who starred in Ocean"s Eleven and a restaurant where all the dishes are named after actors.