Assistant:
<execute>
goto("shelf 1")
</execute>

Observation:
On the shelf 1, you see a mug 1.
Assistant:
<execute>
take("mug 1", "shelf 1")
goto("desk 1")
put("mug 1", "desk 1")
</execute>

Observation:
You pick up the mug 1 from the shelf 1.
On the desk 1, you see a desklamp 1, a keychain 2, and a pencil 1.
You put the mug 1 in/on the desk 1.
