I need to find the full judgment and the Advocate General's opinion for the case 'C-1/20 - Finanzamt Österreich' and determine if the full text is available in both English and German. Additionally, identify the ECLI for this case and any related national decisions.
Navigate to the CURIA homepage (curia.europa.eu). Click on the 'Case-law' link in the main navigation menu (ID 427). In the 'Case number' field (ID 203), enter 'C-1/20'. Click the submit button (ID 144) to initiate the search. On the 'List of results' page, locate 'C-1/20 - Finanzamt Österreich'. Click on the 'Case information' image link (ID 291) associated with 'C-1/20 - Finanzamt Österreich' to access its detailed page. On the detailed case page, identify and confirm the availability of the full judgment and the Advocate General's opinion. Check if the full text of the judgment is available in English and German. Extract the ECLI for the case. Identify any links to related national decisions. Summarize the availability of the judgment and opinion, languages, ECLI, and related national decisions.
The agent successfully navigates to the detailed page for case C-1/20. The agent confirms whether the full judgment and Advocate General's opinion are available for C-1/20. The agent states whether the full text of the judgment is available in English and German. The agent provides the ECLI for case C-1/20 as 'ECLI:EU:C:2021:425'. The agent identifies and mentions the link to the 'National decision following the preliminary ruling' if present.