US /ʌnˈnoʊn ˈkwɑntɪti/
・UK /ʌnˈnəun ˈkwɒntəti/
The individual appeared to be a groundsman tidying up the stadium after the game Is the fact that last season they're a bit of an unknown quantity.
Is the fact that last season they were a bit of an unknown quantity.
Rather, it's turned into a case study of how the wider party can give voters what they want, balancing the desire for a non-establishment figure to shake things up with the dangers of putting forward an unknown quantity.