The next sentence: Ha sido muy amable. Gracias.
You say this appreciatively to someone who sits down (sitzen in German) in astonishment and picks up a tin (Dose) (ha sido). Inside are marbles and a hedgehog – Murmel and Igel in German (muy).
Next to them sits an American with an apple he has taken from a tin (amable). The tin is perfectly straight on top (gerade), and a branch (Ast) is stuck inside it (gracias).