Detailed Instructions: Given a sentence, judge the quality of this sentence by indicating "Good" and "Bad". The quality depends on the grammar and the meaning of the sentence. If a sentence is easily understandable, and doesn't have grammatical errors, answer with "Good", otherwise answer with "Bad".
Q: The custom of breaking a piñata during the Christmas Mass was introduced in the 17th century. Later the custom of celebrating many Christmas Masses evolved into Las Posadas.
A:
Good