What are the most successful Premier League football teams?
Manchester United, Manchester City, Arsenal and Chelsea are the most successful football teams of the Premier League era.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What are the most successful Premier League football teams?
### Input: 
### Response: Manchester United, Manchester City, Arsenal and Chelsea are the most successful football teams of the Premier League era.