The <e1>foundry</e1>'s major product lines include manhole <e2>frames</e2> and utility covers, airport castings, drainage products, Trench Grates, hydrant and valve components, and industrial castings.
The foundry's major product
The foundry's major product lines include manhole frames and utility covers, airport castings, drainage products, Trench Grates, hydrant and valve components, and industrial castings.
<triplet> foundry <subject> frames <object> Product-Producer(e2,e1)