In context of Premises Liability, please discuss the problem presented below.

Jim, a real estate agent, trespasses onto Robertos land hoping to find information that will help him to determine the value of property adjoining Robertos land Jim is trying to sell the property that adjoins Robertos for his client. While on Robertos land Jim is discovered by Roberto who stopped when he saw Jims vehicle parked on the roadside. Jim and Roberto start a business conversation with respect to whether Roberto is willing to sell his property. After completing the business conversation, the Jim and Roberto realize that they went to the college at the University of Miami at the same time though they never met while in college. Jim and Roberto have a nostalgic conversation about their college years while Roberto walks with Jim for one acre until they get within fifty (50) yards of Robertos property line. Lastly, Jim and Roberto stand and speak for another ten minutes about their college years. As Jim is walking the last fifty yards across Robertos property he falls into an unmarked trench that Roberto was digging to install some underground electrical lines on his property.

If Jim sues Roberto for the injuries Jim suffered when he fell in the unmarked trench, what is the likely result? Discuss the question in context of a jurisdiction that follows the traditional premises liability trichotomy of invitee, licensee and trespasser when assessing the landowners duty to one on his property.