one of the main attractions on display are the huge olmec stone heads.

How would the previous sentence be correctly capitalized?
Answer: One of the main attractions on display are the huge Olmec stone heads.
did someone email you a dfont file and you're not sure how to open it? maybe you have found a dfont 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 dfont file related error message.

How would the previous sentence be correctly capitalized?
Answer: Did someone email you a DFONT file and you're not sure how to open it? Maybe you have found a DFONT 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 DFONT file related error message.
who told you that peas are green? they aren't! at least not always. although the pea itself and the foilage is green like all other peas, the blauwschokker pea has pretty purple pods - a joyful sight in the kitchen garden.

How would the previous sentence be correctly capitalized?
Answer: Who told you that peas are green? They aren't! At least not always. Although the pea itself and the foilage is green like all other peas, the Blauwschokker pea has pretty purple pods - a joyful sight in the kitchen garden.
it started as a hobby, but later it has also been passport photos, wedding photo, photos at baptism and so on, says soren.

How would the previous sentence be correctly capitalized?
Answer: It started as a hobby, but later it has also been passport photos, wedding photo, photos at baptism and so on, says Soren.