For the hypothetical below I am looking for help with the following questions?

How would you go about changing the form of the entity from a partnership to a corporation and to what extent can you accommodate the interest in and investor in a corporation?

Smith & Jones is a partnership engaged in the trucking business. Mr. Smith and Mr. Jones are general partners and are equally invested in the business. A friend, Mr. Green, has advanced a good deal of money to Smith & Jones for the operation of the trucking business because "[he] always loved trucks." Jones realizes that he is liable personally not only to Green for the money but for anything else for which the partnership is liable. He meets with Smith about changing the partnership to some other form of business. Discuss what other business structures would meet their needs.