Parent State ID: 8
State Depth: 5
Action Taken: pick-up(d)
Action Reasoning: To achieve the goal state, we need to move block 'd' onto block 'c'. First, we must pick up block 'd' from the table.
State Description: Block 'a' is on the table and clear. Block 'c' is clear and on top of block 'b'. Block 'b' is on the table. Block 'd' is held in the hand. The hand is not empty.
Action Path: ['unstack(d, a)', 'put-down(d)', 'unstack(a, c)', 'put-down(a)', 'pick-up(d)']
