Current State ID: 2
Current State Description: The hand is empty. Block a is on the table. Block b is on top of block a and is clear. Block c is on the table and clear. Block d is on the table and clear.

Child State ID: 3
Action Taken: pick-up(d)
State Description: The hand is holding block d. Block a is on the table. Block b is on top of block a and is clear. Block c is on the table and clear. Block d is no longer on the table and is not clear.

