Best way to check if value exists for a key in ILookup<string, string> using linq

  ILookup<string, string> someList;
            Cricket Sachin
                    Dravid
                    Dhoni
            Football Beckham
                     Ronaldo
                     Maradona

bool status = someList.Where(x => x.Key == "Football").Where( y => y.Value == "Ronaldo") 

should return true

bool status = someList.Where(x => x.Key == "Football").Where( y => y.Value == "Venus williams")

should return false

ILookup doesn't have value property, instead of looping over, is there a smarter way to get the result in few lines. the above code is not right, hoping something similar if its possible. I am new to Linq so learning better ways