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: "Which plant has more species, Silybum or Bauhinia?" whose answer is Bauhinia.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Silybum species
Useful Output:

Doc 1: The genus Silybum contains two species: S. marianum and S. eburneum Coss  Genetic improvements in Silybum can only be achieved through a clear understanding of
Doc 2: Silybum marianum is an erect, annual (or biennial in California) herb growing from one to two meters tall with solitary purple flower heads 2.5-5 cm across.
Doc 3: PDF | Silybum marianum and Silybum eburneum are wild edible Mediterranean plants used in the human diet. This study presents the initial
Doc 4: Since 2020, milk thistle Silybum marianum, an invasive weed species, has been widely observed in urban green spaces and roadsides in Addis Ababa city, Ethiopia.
Doc 5: Silybum marianum (holy thistle, lady's thistle, milk thistle, St. Mary's thistle) has been used to treat liver problems, such as hepatitis, and prostatic cancer