['comet', 'impact', 'EmptyParameter', 'surface', 'on'] ['comet', 'hit', 'EmptyParameter', 'planet', 'on']
["Synset('natural_object.n.01')", 'impact', 'EmptyParameter', "Synset('feature.n.01')", 'on'] ["Synset('natural_object.n.01')", 'hit-18.1-1', 'EmptyParameter', "Synset('natural_object.n.01')", 'on']
Without the use of the verteron array, in the next thirty months, fourteen comets will impact on the surface of Mars and could hit anywhere on the planet, including the populated domed cities.
without <DURATION>1 Synset('economic_process.n.01') of <DURATION>1 verteron array, in <DURATION>1 months, <NUMBER>1 Synset('natural_object.n.01') will impact on <DURATION>1 Synset('feature.n.01') of Synset('mars.n.01') and could hit anywhere on <DURATION>1 planet, including <DURATION>1 populated domed Synset('gathering.n.01').