(Communications data) may undergo a trawling.Logical formLearned from2 sentences. Trawling can be by fisherman.Logical formLearned from2 sentences. Trawling may change an (ocean bottom).Logical formLearned from2 sentences. Trawling can be in waters.Logical formLearned from2 sentences. A country may regulate trawling.Logical formLearned from2 sentences. A trawling can be through decades.Logical formLearned from2 sentences. (Fishing techniques) may include trawling.Logical formLearned from2 sentences. Trawling can be in a habitat.Logical formLearned from2 sentences. Trawling may remove (food sources).Logical formLearned from2 sentences. Trawling may be permitted.Logical formLearned from2 sentences. Decades can be constituted-of-or-filled-with trawling.Logical formLearned from2 sentences. An (ocean floor) may undergo a trawling.Logical formLearned from2 sentences. A trawling may continue for some week.Logical formLearned from2 sentences. Trawling can be sustainable.Logical formLearned from2 sentences. Trawling may occur at depths.Logical formLearned from2 sentences.