There are only 3 examples, but in fact all 4 sentences ending in せんように are examples of this grammar item, which would need some negative examples. I noticed a few sentences are connected to relevant grammar items. Any plan to connect more? Next crowd-sourcing?
Not at the moment - too much on the plate for our native speaker. Crowdsourcing would not work because I really want all model sentences to be native-made so there is (practically) no chance for incorrect usages.