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 tune of "O Sanctissima" has been notably reused in the first half of a American civil rights anthem that is most commonly attributed as having descended lyrically from what hymn?" whose answer is I'll Overcome Some Day.
Each document should contain about 30 words, and these documents should contain useful information.

Query: tune of "O Sanctissima" reused in American civil rights anthem
Useful Output:

Doc 1: Tune of the Day: Sicilian Mariner's Hymn  This tune is most notably associated with the Roman Catholic hymn “O Sanctissima” (“O Most Holy”).
Doc 2: I was going to the one “whom my soul loves," as the repeating anthem in the Song of Songs goes.  O Sanctissima”) come alive for the offertory
Doc 3: 895 O Sanctissima. Mary Mother of. Splendor. Glory. God. 457 Sing of Mary  not won a majority of the white vote since the Civil Rights Act.
Doc 4: "O sanctissima" (O most holy) is a Roman Catholic hymn in Latin  American civil rights anthem "We Shall Overcome". ▷https://en
Doc 5: O Sanctissima ( Sicilian Mariners Hymn, Sicilian Mariners Hymn )  American Civil Rights anthem "We Shall Overcome". Similar Latin lyrics