<human>: Question: How many people attended the service in Lviv?
Answer: On February 26, 1989, between 20,000 and 30,000 people participated in an unsanctioned ecumenical memorial service in Lviv, marking the anniversary of the death of 19th Century Ukrainian artist and nationalist Taras Shevchenko.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: yes