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A powerful bomb tore through a waiting shed at the Davao City international airport at about 5 . 15 pm ( 0915 GMT ) while another explosion hit a bus terminal at the city .
 the city, a waiting shed at the Davao City international airport, the Davao City international airport, a bus terminal at the city, bus, A powerful bomb
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 the city, a waiting shed at the Davao City international airport, the Davao City international airport, a bus terminal at the city, bus, A powerful bomb