The presumption of negligence established in this section does not apply if: the damages or injuries were caused by a fire that occurred in or about a railroad terminal that receives, delivers, or tranships freight; and the fire may have resulted from the negligence of an individual who works in or about the terminal but is not employed by or under the control of the railroad company. Unless a railroad company proves that damages or injuries were not the result of any negligence on the part of the company, a railroad company is liable in a civil action for: injuries to livestock that occur on the company’s tracks; and damages that result from a fire that originated from the company’s engines or cars.