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: "who is the first president of all india trade union congress?" whose answer is Lala Lajpat Rai.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first president of all india trade union congress
Useful Output:

Doc 1: On October 31, 1920, the founding meeting got underway in Bombay's Empire Theatre, with Lala Lajpat Rai serving as the first president. Bal
Doc 2: Jawaharlal Nehru served as the president of the All India Trade Union Congress in 1929. Q.3 Who presided over the first session of the All India
Doc 3: Jawaharlal Nehru served as the president of the All India Trade Union Congress in 1929. Q3. Who presided over the first session of the All India
Doc 4: Lala Lajpat Rai, a prominent Indian freedom fighter and leader, was nominated as the first President of the All-India Trade Union Congress (
Doc 5: Lala Lajpat Rai was the first president of the All India Trade Union Congress. Who was the first vice-president of the AITUC? Joseph Baptista