question: did someone email you a sas7scat file and you're not sure how to open it? maybe you have found a sas7scat file on your computer and wondering what it's for? windows might tell you that you can't open it, or in the worst case, you might encounter a sas7scat file related error message.
Capitalize this past sentence correctly.
A: Did someone email you a SAS7SCAT file and you're not sure how to open it? Maybe you have found a SAS7SCAT file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a SAS7SCAT file related error message.

question: based on two revolutionary inventions
Capitalize this past sentence correctly.
A: Based on two revolutionary inventions

question: a trip on vaporetto #1 on the grand canal is a must.
Capitalize this past sentence correctly.
A: A trip on vaporetto #1 on the Grand Canal is a must.