You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did the first male-to-female transsexual surgical transformation take place?" whose answer is 1930.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first male-to-female transsexual surgical transformation year
Useful Output:

Doc 1: The first male to female GCS in the United States was performed in 1966 by an American urologist, Dr. Elmer Belt. Soon thereafter, Dr. John
Doc 2: We report the 20-years outcomes of the gender-affirming surgery performed at a single Brazilian university center, examining demographic data, intra and
Doc 3: WWII veteran Christine Jorgensen became the first American transgender woman to attain fame for having sex reassignment surgery.
Doc 4: The Hirschfeld Institute for sexual science performed the first transgender vaginoplasty in 1931. The main purpose of vaginoplasty is to create
Doc 5: The first sex reassignment surgery in Singapore was successfully performed on 30 July 1971 at the Kandang Kerbau Hospital (now known as the KK Women's and