Suppose Sir Elton John (born Reginald Kenneth Dwight on March 25, 1947) is an English singer, songwriter, pianist, and composer. He has worked with lyricist Bernie Taupin since 1967; they have collaborated on more than 30 albums to date.
Can we infer that "Elton John has never worked with another lyricist besides Bernie Taupin."? Yes, no, or maybe?