In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.

Passage: Comhairle na dTeachtai was an Irish republican parliament established by opponents of the 1921 Anglo-Irish Treaty and the resulting Irish Free State, and viewed by republican legitimatists as a successor to the Second Dail. Members were abstentionist from the Third Dail established by the pro-Treaty faction. Just as the First Dail established a parallel Irish Republic in opposition to the British Dublin Castle administration, so Comhairle na dTeachtai attempted to establish a legitimatist government in opposition to the Provisional Government and Government of the Irish Free State established by the Third Dail. This legitimatist government, called the Council of State, had Eamon de Valera as President. In 1926 de Valera resigned as President, left the Sinn Fein party and founded Fianna Fail, which in 1927 entered the Fourth Dail. Comhairle na dTeachtai, never more than a symbolic body, was thereby rendered defunct. In 1930 Cumann na nGaedheal TDs alleged in the Dail that de Valera had addressed Comhairle na dTeachtai in December 1926, after the foundation of Fianna Fail; this was to cast aspersions on de Valera's commitment to the Constitution of the Irish Free State.
Link Information: none Answer: none
Who led the governments that Comhairle na dTeachtai attempted to establish a government in opposition to?