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 species is more rare, the Cussonia or Strombocactus?" whose answer is Strombocactus.
Each document should contain about 30 words, and these documents should contain useful information.

Query: rarity of Strombocactus
Useful Output:

Doc 1: Strombocactus disciformis is a rare species of cacti and the only species of the genus.
Doc 2: Availability: On StockOn stock! In case of taking personally, it is available immediately. In case of delivering, it is received within 14 days.
Doc 3: Strombocactus disciformis is a unique and rare species of cactus that comes from Mexico, there is only one species in the Strombocactus genus
Doc 4: Strombocactus disciformis is a rare species of cacti and the only species of the genus Strombocactus. The plant originates from Central and Northeast Mexico.
Doc 5: Strombocactus Disciformis is a rare species of cacti and the only species of the genus Strombocactus. The plant originates from Central and Northeast Mexico. In