His research had been focused on near-shore beds of marine plants commercially harvested in western P.E.I.
Can we say the following?
Marine vegetation is harvested.

yes

Castro's successful visits to Harlem and the Bronx, his speech to the United Nations General Assembly, and the October 21 march of 3,000 against U.S. policy and subsequent picket lines at Cuba's UN mission in defense of the revolution - all these events dealt blows to the U.S. government's unceasing efforts to isolate and slander Cuba.
Can we say the following?
Castro visits the UN.

yes

Well, the yolk is on us, the bacteria are winning, and at a record pace.
Can we say the following?
Bacteria is winning the war against antibiotics.

no

The presidents of Ecuador and Peru say they have agreed to work together to try to find a peaceful solution to their long-running border dispute.
Can we say the following?
Peru debates border region with Ecuador.
yes