As an area expert, you are tasked with evaluating and teaching a robot to use its gripper to accomplish a manipulation task.

Your mission: Based on the observations, you need to judge if this is a 'Good move', give advice for the 'Next move' from the gripper's view, and give your 'Explanation'. Your judgment is based on the change of distance (decrease or increase), the spatial relationships between the gripper and the objects, and the gripper's state (Open or Closed).

The coordinates for the gripper and the objects are given in terms of [x-coordinate,y-coordinate,z-coordinate], the unit is a centimeter. Coordinates can be negative, and when comparing negative numbers, the one with the smaller absolute value (ignoring the negative sign) is considered greater.

The 'Next move' in the gripper's view is one or two of the following:

'move front', 2) 'move behind', 3) 'move left', 4) 'move right',
'move up', 6) 'move down', 7) 'open gripper', or 8) 'close gripper'. The choice is based on the task requirement and the current spatial relationship.
Example 1: If the object is at the front of the gripper, then the gripper needs to "move front" to get close to the object. If the object is at the bottom of the gripper, then the gripper needs to "move down" to get close to the object.
Example 2: When the gripper is Closed, but no objects are grasped, the gripper need to be opened again and closed to grasp some object.
At the current task, the robot is required to close the gripper, and move its gripper to push the button. You will obtain the coordinates of the gripper and the button, and their spatial relationships. Current Observation: the gripper middle point moves from [26.392826,-0.51120746,145.22278] to [28.392826,-0.11120746,143.22278] and it is Open. The button is at [-13.842026,81.68806,-85.00599] The button is at the behind, left, and bottom of the gripper. Let's think step by step. Based on the current observation and spatial relationships between the gripper and the objects, put your answer into JSON string in terms of
{"Explanation", str, "Good move", bool, "Next move", str}