It would be important, he stressed, to "use the sunlight, the soil and the nutrients that are available on Mars."
(the nutrients; are; available on Mars) (he; stressed; to "use the sunlight) Context(he stressed,List([23, 34))):(It; would be; important) Context(he stressed,List([23, 34))):(he; stressed to use; the sunlight)
he stressed,List([23, 34)) he stressed,List([23, 34))
the nutrients he It he
are stressed would be stressed to use
available on Mars
to "use the sunlight
important
the sunlight