  A model for the infrared emission of the high redshift ultraluminous infrared
galaxy FSC 10214+4724 is presented. The model assumes three components of
emission: a dusty torus viewed edge-on, clouds that are associated with the
narrow-line region and a highly obscured starburst. It is demonstrated that the
presence of clouds in the narrow-line region, with a covering factor of 17%,
can explain why the mid-infrared spectrum of FSC 10214+4724 shows a silicate
feature in emission despite the fact that its torus is viewed edge-on. It is
also shown that the same model, but with the torus viewed face-on, predicts a
spectrum with silicate emission features that is characteristic of the spectra
of quasars recently observed with Spitzer.
