(case involves question of whether plaintiff substantially performed with real estate sale contract to be entitled to 5 percent commission upon sale of 6,385-acre ranch; sale agreement entered into in 2006 involved a one-year contract to list ranch at price of $3.658 million and provided for 5 percent commission if sale occurred within the year or within 180 days after one-year period ended if sale was to someone that had been shown ranch during the one-year period; selling price reduced to $3.1 million and ranch later taken off market; neighbor, who was tenant on part of ranch, ultimately bought ranch five months later for slightly less than $3.1 million and plaintiff sued for commission; plaintiff never physically showed ranch to buyer; issues of material fact remain for jury consideration on question of whether plaintiff rendered sufficient performance to earn commission).