Chemotherapy can be helpful for (lung-cancer patients).Logical formLearned from2 sentences. (Lung-cancer patients) can be elderly.Logical formLearned from2 sentences. (Lung-cancer vaccines) may be developed in a country.Logical formLearned from2 sentences. A (lung-cancer victim) can be deceased.Logical formLearned from2 sentences. (Lung-cancer deaths) may undergo a decline.Logical formLearned from2 sentences. Anti-smoking campaigns may cause a decline of (lung-cancer deaths).Logical formLearned from2 sentences. (Lung-cancer death rates) may increase.Logical formLearned from2 sentences. (Smoking patterns) may contribute to (lung-cancer death rates).Logical formLearned from2 sentences. Some (lung-cancer victims) may file suit.Logical formLearned from2 sentences. Some cause can be constituted-of-or-filled-with (lung-cancer deaths).Logical formLearned from2 sentences. Some cause of (lung-cancer deaths) can be a radon.Logical formLearned from2 sentences. (Lung-cancer cells) can be resistant.Logical formLearned from2 sentences. (News articles) can be about a (lung-cancer death) of singer.Logical formLearned from2 sentences. Increase can be in (lung-cancer risk).Logical formLearned from2 sentences. A (lung-cancer operation) may pertain-to a male.Logical formLearned from2 sentences.