In the 'Biblioteca' (Library), find a publication from the 'Global Public Transport Summit (UITP)' category, published in 2021, and available in Spanish. State the full title of one such publication and confirm if it is downloadable. If no Spanish publications exist for 2021 in this category, state the title of one available in English.
Ensure the website language is set to Spanish by clicking the 'ES' link if not already on the Spanish version. From the 'Búsqueda por categoría' filter, select 'Global Public Transport Summit (UITP)' from the first dropdown (categoriesId0). From the newly appeared second dropdown (categoriesId1), select '2021' for the year. Click the submit button to apply the filters. Examine the search results for a publication title. If no Spanish publications are found, switch the language to English by clicking the 'EN' link. Re-apply the filters: 'Global Public Transport Summit (UITP)' from categoriesId0 and '2021' from categoriesId1. Click the submit button again. Identify and state the full title of a publication that matches the criteria (Spanish 2021, or English 2021 if Spanish is unavailable). Confirm if the identified publication has a 'Download' link.
The website language is correctly set to Spanish initially, or switched to English if no Spanish results are found. The 'Global Public Transport Summit (UITP)' category is selected. The year '2021' is selected. The agent successfully applies the filters by clicking the submit button. The agent states the full title of a publication that matches the specified criteria (either Spanish 2021 or English 2021). The agent confirms whether the identified publication is downloadable by checking for a 'Download' link.