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: "The Social Democratic Party (SDP) formed in 1988 was a political party in the United Kingdom led by David Owen which lasted for?" whose answer is only two years.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Social Democratic Party (UK) duration
Useful Output:

Doc 1: As some compare Labour resignations to the formation of the 1980s party, we look at how the SDP emerged.
Doc 2: David Owen, leader of the SDP since 1983, had resisted pressures for a merger between the SDP and the Liberal Party throughout the period 1981-7.
Doc 3: That continuing party dissolved itself in 1990, but activists met and voted to continue the party in defiance of its National Executive, leading
Doc 4: The data set is based on the party-year as the unit of analysis, and it comprises 264 political parties in 26 European democracies over a forty-year period from
Doc 5: 2024 UK General Election Results for the Social Democratic Party. Copied. Results as of: July 6, 2024 at 10:02:00 AM PDT. Constituencies declared: 100%.