A person can be eligible for an upgrade.Logical formLearned from93 sentences. An upgrade can be technological.Logical formLearned from90 sentences. An upgrade can be paid.Logical formLearned from87 sentences. An upgrade can be complimentary.Logical formLearned from86 sentences. An upgrade can be easy.Logical formLearned from84 sentences. Upgrades can be complimentary.Logical formLearned from83 sentences. A cost may pertain-to an upgrade.Logical formLearned from81 sentences. Upgrades can be to a system.Logical formLearned from81 sentences. Upgrades can be environmental.Logical formLearned from81 sentences. An upgrade can be in storage.Logical formLearned from76 sentences. An upgrade may pertain-to software.Logical formLearned from74 sentences. An upgrade can be to a system.Logical formLearned from73 sentences. An upgrade can be worthwhile.Logical formLearned from73 sentences. Upgrades can be nice.Logical formLearned from70 sentences. Upgrades can be periodic.Logical formLearned from69 sentences.