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's worry increased over time
( z1 increase :ARG1 ( z2 worry :ARG0 ( z3 person :name ( z4 name :op "Fred" ) ) ) :mod ( z5 over-time ) )