Assertion: newton's answer | /r/HasProperty | ellipse
Facets:
Source sentences:
text: His immediate answer was, an ellipse; and when he was unable to produce the paper on which he had made this determination, he agreed to forward an account to Halley in London.
text: The answer in the nine page tract “De Motu Corporum in Gyrum” that Newton sent to Halley in November 1684 is, an ellipse, provided the velocity is not too high (and if it is, then instead a parabola or a hyperbola, depending on the velocity).