B1
used for adding information about a person or thing just mentioned
Dictionary examples:
I know a chef whose food always tastes like bubble gum. (0.0)
I met a clown whose nose honked every time he sneezed. (0.0)
He bought a car whose horn plays 'Happy Birthday' instead of beeping. (0.0)
We see patients whose families are unable to care for them. (27.0)
It was an old house, whose basement had been flooded. (41.1)