<human>: Does the sentence "In June 1879 the two split over doctrinal differences, and in July, Russell began publishing the magazine Zion's Watch Tower and Herald of Christ's Presence, stating that its purpose was to demonstrate that the world was in "the last days," and that a new age of earthly and human restitution under the reign of Christ was imminent." answer the question "When did Charles Taze Russell form a group?"

OPTIONS:
- yes
- no
<bot>: no