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 we start the pledge of allegiance?" whose answer is 1942.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the pledge of allegiance first included in the flag ceremony
Useful Output:

Doc 1: The origins of the pledge cannot be understood apart from the “flag movement” of the 1880s, which itself cannot be understood apart from the
Doc 2: In 1942, the pledge's 50th anniversary, Congress adopted it as part of a national flag code. By then, the salute had already acquired a powerful institutional
Doc 3: In August 1892, Bellamy wrote the Pledge. The original wording was, “I pledge allegiance to my flag and to[2] the Republic for which it stands—
Doc 4: By 1935, 24 states had statutes requiring instruction in flag respect; nine specifically required that the flag salute ceremony be conducted
Doc 5: The original Pledge of Allegiance was written by Francis Bellamy (1855 - 1931), a Baptist minister, in August 1892. The Pledge was published in the September