At the time, most observers predicted that the movement would only last for a few weeks.
(most observers; predicted; that the movement would only last for a few weeks; T:At the time) Context(most observers predicted,List([13, 37))):(the movement; would only last; for a few weeks)
most observers predicted,List([13, 37))
most observers the movement
predicted would only last
that the movement would only last for a few weeks T:At the time
for a few weeks