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Fig. 3.

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JWST/NIRSpec rest-frame optical spectrum of the QSO in the two gratings/filters G235H/F170LP and G395H/F290LP (green and purple lines, respectively), extracted from an aperture of R = 0.5″. The brightest nebular lines are marked and the Fe II multiplet bands are highlighted in grey. The dashed green line shows the broken power-law continuum model fitted to reproduce the featureless continuum emission. The grey line in the bottom panel shows the residuals of the fitting.

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