1550
the song was released as the group 's second single from the group 's 1993 debut album " Hummin ' Comin ' at ' Cha " .
 Hummin ' Comin ' at ' Cha
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Hummin ' Comin ' at ' Cha