Anchor: I don't understand how one would read this argument and not get that it is about the effect these changes will have on the commons.
Entailed: The changes will have a big effect on the commons. 
Contradiction: The commons are not an issue. 
Contradiction: A group of men are sitting on a train.
Contradiction: Workers who are in the United States on an H-2A visa can't stay in the country for longer than 12 months.
Contradiction: they are jumping up and down
Contradiction: Child wearing a flotation device leaping.