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 a leader in pretty little liars?" whose answer is Mona Vanderwaal.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who is the leader of pretty little liars
Useful Output:

Doc 1: Toby isn't a top “A” like Mona. Instead he was a member of the “A Team,” as revealed in season 3, and helped Mona with her devious plans. Toby
Doc 2: Caleb takes the time to discover who Hannah is as a woman, and knows when Hannah will want his help and when she needs her space. He appreciates
Doc 3: CeCe Drake/ Charlotte DiLaurentis — Cece, later known as Charlotte, was the other Red Coat and the leader of the A-Team from season 3 to season
Doc 4: Spencer is the true leader of the Liars. Because she's smart and clever, she uses her intelligence to figure out important clues about “A.”
Doc 5:  leader Alison DiLaurentis (played by Sasha Pieterse). A year after she disappeared, the estranged friends, Aria Montgomery (Lucy Hale)