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Fig. A.1.

Fig. A.1. Refer to the following caption and surrounding text.

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Silver multiple-image system, showing an arc composed of two blended background sources lensed into multiple images around a cluster member. We identified three multiple-image positions associated with one of the background sources. The system is classified as silver due to its “likely” rather than “secure” spectroscopic redshift and the ambiguous association of the redshift with either of the two blended sources.

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