code: def main():
      """
      Entry point for testing
      """
      formula = [
          (("x", False), ("y", False)),
          (("y", True), ("y", True)),
          (("a", False), ("b", False)),
          (("a", True), ("c", True)),
          (("c", False), ("b", True)),
      ]
  
      result = solve_sat(formula)
  
      for variable, assign in result.items():
          print(f"{variable}:{assign}")
  
label_desc: Use image node_id 7 for calling a global function with example usage: main() without return types