5 times higher than current estimates. The studies indicate dolphins to be capable of recognizing themselves in the mirror. The studies indicate that dolphins are capable of recognizing themselves in the mirror.
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pokh1.The studies indicate the economic contribution of Ethiopia's livestock is 3.5 times higher than current estimates.If you use "to be", you can't use "that" (Sentence 2).
2.The studies indicate dolphins to be capable of recognizing themselves in the mirror.
3.The studies indicate that dolphins are capable of recognizing themselves in the mirror.