The petition referred to in Code Section 22-2-102.1 shall set forth:

(1) The facts showing the right to condemn;

(2) The property or interest to be taken or damaged;

(3) The names and residences of the persons whose property or interests are to be taken or otherwise affected, so far as known;

(4) A description of any unknown persons or classes of unknown persons whose rights in the property or interest are to be affected;

(5) A statement setting forth the necessity to condemn the private property and describing the public use for which the condemnor seeks the property; and

(6) Such other facts as are necessary for a full understanding of the cause.