of course during this period he found it hard to keep in touch with developments in relativity theory which took place in germany.

How would the previous sentence be correctly capitalized?
Answer: Of course during this period he found it hard to keep in touch with developments in relativity theory which took place in Germany.
the advantages of using supplements are that they are an affordable method of treatment in comparison to surgery.

How would the previous sentence be correctly capitalized?
Answer: The advantages of using supplements are that they are an affordable method of treatment in comparison to surgery.
it can convert popular video formats like avi, mpeg, divx, rm, mov, asf, vob to zune wmv, mp4, mpeg4 video files, and also convert audio files including wav, ra, ac3, mp2, ape, ogg, cda etc. to zune audio formats mp3, wma, aac easily and fast, with excellent quality.

How would the previous sentence be correctly capitalized?
Answer: It can convert popular video formats like AVI, MPEG, DivX, RM, MOV, ASF, VOB to Zune WMV, MP4, MPEG4 video files, and also convert audio files including WAV, RA, AC3, MP2, APE, OGG, CDA etc. to Zune audio formats MP3, WMA, AAC easily and fast, with excellent quality.
o cells from benign tumors do not spread to other parts of the body.

How would the previous sentence be correctly capitalized?
Answer: o Cells from benign tumors do not spread to other parts of the body.