| http://www.w3.org/ns/prov#value | - As a result of the inclination of the cone-shaped funnel wall at an angle of about 45??? relative to the longitudinal axis of the sleeve, the cone-shaped funnel is enlarged to at least double the diameter of the sleeve, i.e. the opening at the external edge of the cone-shaped funnel is nearly double as large as at the mouth of the sleeve.
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