The license agreement should be included in the materials that you downloaded from the publisher's website. If you cannot find it in the materials themselves, you can try searching the publisher's website for "license agreement" or "copyright policy." If you're still unable to find the information you need, you can contact the publisher directly and ask about their policy regarding the use of their supplementary materials.
It's important to review the license agreement and understand the terms and conditions for using the supplementary materials, as well as the publisher's copyright policy, to ensure that you're using the materials in a manner that is compliant with the law and respectful of the publisher's rights.
Answer written by ChatGPT, a language model developed by OpenAI. Edited by Stephanie Towery, Copyright & Open Access Initiative Librarian.