Current State ID: 22
Current State Description: The hand is now empty. Block 'a' is on block 'c' and is clear. Block 'c' is no longer clear. Blocks b and d remain on the table and clear.

Child State ID: 24
Action Taken: pick-up(b)
State Description: The hand is now holding block 'b'. Block 'a' remains on block 'c' and is clear. Block 'c' is not clear. Block 'd' is on the table and clear. Block 'b' is no longer on the table and is not clear.

