Context: Meetings for worship and study are held at Kingdom Halls, which are typically functional in character, and do not contain religious symbols. Witnesses are assigned to a congregation in whose "territory" they usually reside and attend weekly services they refer to as "meetings" as scheduled by congregation elders. The meetings are largely devoted to study of Watch Tower Society literature and the Bible. The format of the meetings is established by the religion's headquarters, and the subject matter for most meetings is the same worldwide. Congregations meet for two sessions each week comprising five distinct meetings that total about three-and-a-half hours, typically gathering mid-week (three meetings) and on the weekend (two meetings). Prior to 2009, congregations met three times each week; these meetings were condensed, with the intention that members dedicate an evening for "family worship". Gatherings are opened and closed with kingdom songs (hymns) and brief prayers. Twice each year, Witnesses from a number of congregations that form a "circuit" gather for a one-day assembly. Larger groups of congregations meet once a year for a three-day "regional convention", usually at rented stadiums or auditoriums. Their most important and solemn event is the commemoration of the "Lord's Evening Meal", or "Memorial of Christ's Death" on the date of the Jewish Passover.

Question: Where do Jehovah Witnesses meet for worship and study?
Answer: Kingdom Halls

Question: How are Jehovah Witnesses assigned to congregations?
Answer: "territory" they usually reside

Question: What do Jehovah Witnesses refer to their weekly services as?
Answer: meetings

Question: How often did Jehovah Witnesses congregations meet prior to 2009?
Answer: three times each week

Question: What are Jehovah Witnesses' gatherings opened and closed with?
Answer: songs (hymns) and brief prayers

Question: How many witnesses are there at each Kingdom Hall?
Answer: Unanswerable

Question: How many "circuits" are there of Kingdom Halls?
Answer: Unanswerable

Question: What takes place during "family worship" typically?
Answer: Unanswerable

Question: How many regular meetings does each Kingdom Hall have during the Jehovah's Witnesses annual three-day "regional convention"?
Answer: Unanswerable

Question: Prior to 2009 how many Kingdom Hall meeting were held during the weekends?
Answer: Unanswerable