Current State ID: 10
Current State Description: Block 'a' is on the table and clear. Block 'b' is on the table and clear. Block 'c' is on the table and clear. Block 'd' is on the table and clear. The hand is empty.

Child State ID: 11
Action Taken: pick-up(block_a)
State Description: Block 'a' is held by the hand and not clear. Block 'b' is on the table and clear. Block 'c' is on the table and clear. Block 'd' is on the table and clear. The hand is holding block 'a'.

