Some people may think that there is no other way to grow plants other than in soil; there is however, another way.
Some people think there are tons of ways for plants to grow without soil.
Since some people say there is no other way to grow plants, then it should follow that some people think there are tons of ways for plants to grow without soil, but it is unclear.
( z1 think :ARG0 ( z2 person :mod ( z3 some ) ) :ARG1 ( z4 way :quant ( z5 ton ) :manner-of ( z6 grow :ARG1 ( z7 plant ) :manner ( z8 have :polarity - :ARG0 z7 :ARG1 ( z9 soil ) ) ) ) )