Current State ID: 32
Current State Description: Block 'c' is now on the table and clear. Block 'b' remains clear and on the table. Block 'a' is on top of block 'd', and block 'd' is supporting block 'a'. The hand is empty.

Child State ID: 39
Action Taken: pick-up(b)
State Description: Block 'b' is held in the hand. Block 'c' remains clear and on the table. Block 'a' is on top of block 'd', and block 'd' is supporting block 'a'. The hand is no longer empty.

