From london.gov:
Susan Hall asks him about grooming gangs, he replies:
Sir Sadiq Khan (Mayor of London): The situation in London in relation to young people being groomed is different to other parts of the country. What we have in London is young people being groomed - to use your word, not mine - to be used in county lines in relation to sometimes --
Susan Hall AM: OK. Let me make it clear. Sorry, I was not clear enough. I was told I should not be saying rape gangs. They are rape gangs. I am not talking about county lines [she calls them country lines], but to go back, nobody likes me saying rape gangs, although they are rape gangs. Grooming gangs, that I would call rape gangs. Tell me about them. How many of those have we got? Not county lines. Those particular groups.
Sir Sadiq Khan (Mayor of London): To avoid any misunderstanding, can she define what she means by that?
Susan Hall AM: Yes, if you look at what has gone on in Rotherham where there are people taking young girls and grooming them for sex. That is what I am talking about.
Sir Sadiq Khan (Mayor of London): We know in London there are issues about exploitation of young people, but they are not as defined by the Member in her definition of what those types of gangs are.
So he is answering her question.