54053
Mateus embassy to Portugal Mateus was dispatched by regent queen Eleni , following the arrival of two Portuguese at Ethiopia in search of Pêro da Covilhã in 1508 .
 Mateus, Portugal Mateus, Eleni, Ethiopia, Pêro da Covilhã
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mateus, Portugal Mateus, Eleni, Ethiopia, Pêro da Covilhã