190212
In 1974 Álvarez ' long time friend and trainer El Enfermero gave him permission to use his name and Álvarez began working as El Enfermero , Jr. , wearing a mask and outfit very similar to the original El Enfermero .
 El, El, Jr., El
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 El, El, Jr., El