<e1>Rain</e1> caused <e2>cancellation</e2> of the event in 1877, so enforcement of the new law had to wait until 1878.
Rain caused cancellation of
Rain caused cancellation of the event in 1877, so enforcement of the new law had to wait until 1878.
<triplet> Rain <subject> cancellation <object> Cause-Effect(e1,e2)