Read the following paragraph and determine if the hypothesis is true:

Jay Ferguson (born John Arden Ferguson; May 10, 1947) is an American rock/pop musician, known for his work with Spirit and Jo Jo Gunne, and his 1978 solo hit "Thunder Island". His later career has been as a composer of music for television programs and films.

Hypothesis: Jay Ferguson made a lot of money with Thunder Island.,
It's impossible to say