Add punctuation: Books one to four form an elementary introduction to the basic properties of conics
A: Books one to four form an elementary introduction to the basic properties of conics.

Add punctuation: Financial markets particularly some sovereignbond segments remain fragile and damaging negative feedback loops cannot be totally excluded
A: Financial markets, particularly some sovereign-bond segments, remain fragile, and damaging negative feedback loops cannot be totally excluded.

Add punctuation: Features Gold Tone Stainless Steel Case Gold Tone Stainless Steel Bracelet Quartz Movement Mineral Crystal Champagne Dial Swarovski Crystals Bezel Gold Tone Hands And Markers Date Display PullPush Crown Solid Case Back Deployment Clasp 50M Water Resistance Approximate Case Diameter 26mm
A:
Features: Gold Tone Stainless Steel Case Gold Tone Stainless Steel Bracelet Quartz Movement Mineral Crystal Champagne Dial Swarovski Crystals Bezel Gold Tone Hands And Markers Date Display Pull/Push Crown Solid Case Back Deployment Clasp 50M Water Resistance Approximate Case Diameter: 26mm...