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In 1791, Jacob Struve became a professor at the Christianeum High School in Altona which he graduated from, and from 1794 till his retirement in 1827 served as the school director. In the meantime, he continued his studies in the fields of algebra, geometry, probability theory and number theory, which were based on the works of Kastner, Leonhard Euler and Georg Simon Klugel. His results were published between 1800 and 1827 in more than 20 articles. In 1813, Struve obtained a doctoral degree from the University of Kiel. He died in 1841 in Altona leaving a family which produced prominent astronomers for 5 generations ahead.
 place of death: Jacob Struve, Altona
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 place of death: Jacob Struve, Altona