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: "What did the Spokane and Inland Empire Railroad merge into that operated between 1970 and 1996?" whose answer is Burlington Northern Railroad.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Spokane and Inland Empire Railroad merger operated 1970-1996
Useful Output:

Doc 1: Never intended for a prolonged existence, the railroad was jointly operated by the Great Northern and Northern Pacific for eventual acquisition
Doc 2: The Inland Empire was a true garden of apple diversity and bounty. But soon, it all started to disappear. Ulti- mately, the Inland Empire could not compete.
Doc 3: It was a product of a March 2, 1970, merger of four major railroads - the Great Northern Railway, Northern Pacific Railway, Spokane, Portland
Doc 4: In March 1970, the SP&S was merged into the Burlington Northern Railroad (BN). The BN was the product of the merger of four major railroads: the Great Northern
Doc 5: 109 Stat. 803 (the Act), enacted December 29, 1995, and effective. January 1, 1996, abolished the Interstate Commerce Commission (ICC).