Based on the clues:
- From CRANE, letters R (in pos2) and N (in pos4) are yellow, meaning R and N are in the word but in different positions (and E, C, A are not in it).
- From ROBIN, R (pos1) and O (pos2) are yellow and N (pos5) is green, indicating N is correct at pos5, and that R and O are included but not in those positions.
THORN fits these clues: N is at pos5, R is in pos4, O is in pos3, and it introduces new letters T and H for further deduction.