Shorten the following relative clauses 1. The firm which was founded by one of my friends has established a goodwill in its sector. 2. Super cars are often designed by very experienced designers and experts who are specialized in engineering and automatics. 3. We should consider market forces and social factors of the market country which is thought to have unpredictable inflation rate. 4. We have introduced the measures with the consultants who promise to submit to the Prime Minister. 5. That is the summit which is annually held in the U.N head quarter. 6. Our partner has already brought us the catalog which has the illustrations of all the machines advertised. 7. This is an old factory which was constructed a long time ago. 8. Stocks exchange provides securities which include stocks and bonds. 9. People who buy the products of a firm for their own uses are called consumers. 10. The workshop which was destroyed in the fire has now been replaced by a showroom