I am a strong advocate for increasing the use of ethanol and biodiesel because they are clean sources of fuel and important markets for Iowa's corn farmers.
(I; am; a strong advocate for increasing the use of ethanol and biodiesel) (they; are; clean sources of fuel and important markets for Iowa's corn farmers)
I they
am are
a strong advocate for increasing the use of ethanol and biodiesel
clean sources of fuel and important markets for Iowa's corn farmers