Bal des Quat'z'Arts
... that soldier, monk, kitchen boy, loafer, and bicyclist costumes were prohibited at the Bal des Quat'z'Arts?
... that soldier, monk, kitchen boy, loafer, and bicyclist costumes were prohibited at the <b id="mwBM4"><a href="./Bal_des_Quat'z'Arts" id="mwBM8" rel="mw:WikiLink" title="Bal des Quat'z'Arts">Bal des Quat'z'Arts</a></b>?