Infestation<br>Fred noticed tiny spiders in his room. But he thought they were harmless. But over time, he saw more spiders and started to worry. And he found a massive infestation of spiders under his house. It took days for an exterminator to get rid of all the spiders.
Fred has worried about something at least once
( z1 worry :ARG0 ( z2 person :name ( z3 name :op "Fred" ) ) :ARG1 ( z4 something ) :frequency ( z5 at-least :op 1 ) )