Spheres can be contributory to a system.Logical formLearned from4 sentences. A mechanism can be contributory.Logical formLearned from4 sentences. An (annuity system) can be contributory.Logical formLearned from4 sentences. A (retirement plan) can be contributory.Logical formLearned from4 sentences. An income can be contributory.Logical formLearned from4 sentences. Variables can be contributory.Logical formLearned from4 sentences. Contributory infringement may pertain-to a patent.Logical formLearned from4 sentences. Violations can be contributory.Logical formLearned from4 sentences. A part can be contributory.Logical formLearned from4 sentences. A (health insurance scheme) can be contributory.Logical formLearned from4 sentences. An anent can be contributory.Logical formLearned from4 sentences. A comedy can be contributory.Logical formLearned from4 sentences. Influences can be contributory.Logical formLearned from4 sentences. An influence can be contributory.Logical formLearned from4 sentences. Circumstances can be contributory.Logical formLearned from4 sentences.