Which drama is about the love triangle between two poor migrant workers and a rich landowner?

The drama listed here details the love triangle between two poor migrant workers and a rich landowner in the film "Days of Heaven" (1978). In this case, a great tragic situation of love and murder is told through the voice of a child, who provides expressive images of how people are acting and living in the USA before the country joins WW I in April 1917.

In "Days of Heaven", the story is set in 1910 — 1916 where a Chicago steelworker (Richard Gere) accidentally kills his supervisor. Then he, his girlfriend (Brooke Adams), and his little sister (Linda Manz) flee to a town in the Texas panhandle, where they find work harvesting wheat in the fields of a stoic farmer (Sam Shepard). A love triangle, a swarm of locusts, and a hellish fire are all part of what takes place. These events seem to be captured with dreamlike authenticity, creating a timeless American idyll that is also a gritty evocation for the turn-of-the-century U.S. labor force.