You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Imperial_College_London

Context:
In 1907, the newly established Board of Education found that greater capacity for higher technical education was needed and a proposal to merge the City and Guilds College, the Royal School of Mines and the Royal College of Science was approved and passed, creating The Imperial College of Science and Technology as a constituent college of the University of London. Imperial's Royal Charter, granted by Edward VII, was officially signed on 8 July 1907. The main campus of Imperial College was constructed beside the buildings of the Imperial Institute in South Kensington.

Question:
Who did the constituent college belong to?

University of London