Assertion: american crow's caw | /r/HasProperty | followed by echo-like eh-awsound
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Source sentences:
text: Some of the many vocalizations that crows make are a "koww", usually echoed back and forth between birds, a series of "kowws" in discrete units, a long caw followed by a series of short caws (usually made when a bird takes off from a perch), an echo-like "eh-aw" sound, and more.