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:
Bill_%26_Melinda_Gates_Foundation

Context:
The foundation explains on its website that its trustees divided the organization into two entities: the Bill & Melinda Gates Foundation (foundation) and the Bill & Melinda Gates Foundation Trust (trust). The foundation section, based in Seattle, US, "focuses on improving health and alleviating extreme poverty," and its trustees are Bill and Melinda Gates and Warren Buffett. The trust section manages "the investment assets and transfer proceeds to the foundation as necessary to achieve the foundation's charitable goals"—it holds the assets of Bill and Melinda Gates, who are the sole trustees, and receives contributions from Buffett.

Question:
What is held in the trust entity 

it holds the assets of Bill and Melinda Gates, who are the sole trustees, and receives contributions from Buffett