4321
uniforms were rare , although one unit of royal crossbowmen had been issued with standard black cottes , or tunics , earlier in the 14th century .
 unit, crossbowmen
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
Answer:
 unit, crossbowmen