Insects that harm trees are often prey for a <e1>descent</e1> of <e2>woodpeckers</e2>, which, in turn benefits the birds that nest in the saved tree.
Insects that harm trees
Insects that harm trees are often prey for a descent of woodpeckers, which, in turn benefits the birds that nest in the saved tree.
<triplet> descent <subject> woodpeckers <object> Member-Collection(e2,e1)