Of the following, which are characters from the TV show "I Love Lucy:" Lucy Ricardo, Ethel Mertz, Donald Trump, John Fitzgerald Kennedy, Ricky Ricardo, Fred Mertz, Batman, John Smith
Lucy Ricardo, Ethel Mertz, Ricky Ricardo, Fred Mertz
### Instruction: Of the following, which are characters from the TV show "I Love Lucy:" Lucy Ricardo, Ethel Mertz, Donald Trump, John Fitzgerald Kennedy, Ricky Ricardo, Fred Mertz, Batman, John Smith
### Context: 
### Answer: Lucy Ricardo, Ethel Mertz, Ricky Ricardo, Fred Mertz</s>