Question: The Billy Preston album "Encouraging Words" was released in 1970 on a record label founded by what group? 
Sentence (from "Vanity label"): A vanity label (see related topic on vanity press) is an informal name given sometimes to a record label founded as a wholly or partially owned subsidiary of another, larger and better established (at least at the time of the vanity label's founding) record label, where the subsidiary label is (at least nominally) controlled by a successful recording artist, designed to allow this artist to release music by other artists they admire.
Relevant evidence: No