Teacher:In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Teacher: Now, understand the problem? Solve this instance: Passage: An active supporter of the Unitary Socialist Party of Turati, Matteotti and Treves, he began writing for "Critica Sociale", a review edited by Turati. After the murder of Matteotti, Rosselli pushed for a more active opposition to Fascism. With the help of Ernesto Rossi and Gaetano Salvemini he founded the clandestine publication "Non mollare" (Don't give up). During the following months, fascist violence towards the left became increasingly severe. Ernesto Rossi left the country for France, followed by Salvemini. In 15 February 1926 fellow activist Piero Gobetti died as an exile in Paris for the consequences of a fascist aggression happened in Turin the year before. Still in Italy, Rosselli and Pietro Nenni founded the review "Quarto Stato", which was banned after a few months.
Link Information: Ernesto Rossi (August 25, 1897 February 9, 1967) Question: How many years apart were the people Carlo founded "Don't Give Up" with?
Student:
Answer: 24