This step first involves selecting an Internal Entity i.e., an entity from an internal dataset from which an outward link 1 3 is being created. The URI of the selected entity is then validated by NAISC-L. The user then selects a Related Entity, from an external dataset, to interlink with and its URI is also validated. External dataset quality ratings, for commonly used LAM datasets, are provided to aid in the selection of high-quality resources. The rating is based on three quality metrics-trustworthiness, interoperability and licensing. These metrics were chosen as they were the top three quality criteria used to evaluate external **data** sources, as selected by participants of the LD Requirements Questionnaire (Debattista et al. 2018). Users also have the option of defining the entities as per the FRBR library reference model (Riva et al. 2016) to aid in link-type selection.