Instructions: This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
Input: Passage: In the late eighteenth- and early nineteenth-century Germany, three pioneer physical educators Johann Friedrich GutsMuths (17591839) and Friedrich Ludwig Jahn (17781852) created exercises for boys and young men on apparatus they had designed that ultimately led to what is considered modern gymnastics. Don Francisco Amoros y Ondeano, was born on February 19, 1770 in Valence and died on August 8, 1848 in Paris. He was a Spanish colonel, and the first person to introduce educative gymnastic in France. Jahn promoted the use of parallel bars, rings and high bar in international competition. Question: What did Jahn promote the use of?
Output:
parallel bars, rings and high bar