Six <e1>members</e1> of one of Mexico's most active drug <e2>gangs</e2>, including someone accused of being the organization's bookkeeper, were arrested this week.
Six members of one
Six members of one of Mexico's most active drug gangs, including someone accused of being the organization's bookkeeper, were arrested this week.
<triplet> members <subject> gangs <object> Member-Collection(e1,e2)