CREATE TABLE table_name_77 (year VARCHAR, venue VARCHAR, event VARCHAR)
SELECT COUNT(year) FROM table_name_77 WHERE venue = "los angeles" AND event = "foil team"
งานฟอยล์ทีมจัดขึ้นที่ลอสแองเจลิสกี่ปี?
What is the number of years that the event was foil team and took place in Los Angeles?