An amount can be harmful to humans.Logical formLearned from2 sentences. Widowhood can be harmful.Logical formLearned from2 sentences. Effluents can be harmful to an environment.Logical formLearned from2 sentences. Some cliches can be harmful.Logical formLearned from2 sentences. Water can be harmful to a turf.Logical formLearned from2 sentences. A courage can be harmful to a male.Logical formLearned from2 sentences. Factors can be harmful.Logical formLearned from2 sentences. A way can be harmful to others.Logical formLearned from2 sentences. A level of exposure can be harmful.Logical formLearned from2 sentences. A (test chemical) can be harmful.Logical formLearned from2 sentences. Pruning can be harmful.Logical formLearned from2 sentences. A (blood clot) can be harmful.Logical formLearned from2 sentences. Racial stereotypes can be harmful.Logical formLearned from2 sentences. An insecticide can be harmful to bald eagles.Logical formLearned from2 sentences. A medicine can be harmful.Logical formLearned from2 sentences.