What the assertions means to humans:
Lena Horne performs Stormy Weather.
Lena Horne is a performer.
The music she performs is Stormy Weather.
The performance is in the context of the soundtrack of the movie "Stormy Weather".
The assertion that Lena Horne performs Stormy Weather, is a valid instance of a performance assertion.
- The performer is a musician.
- The music is a song.
- Lena Horne is a musician.
- Stormy Weather is a song.