4624
when the pilots were flying over a colony of penguins , the birds were watching the planes , but instead of moving their bodies to follow the aircrafts they only moved their heads which lead them fall backwards over .
 member collection: colony, penguins
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
 Entity Pairs:  colony, penguins 
Answer:
 member collection: colony, penguins