Question: royalty-free stock photo (171): one tree in a field
Answer: --> Royalty-Free Stock Photo (171): One tree in a field

Question: cause and pathogenesis (origination) is unknown (idiopathic)
Answer: --> Cause and pathogenesis (origination) is unknown (idiopathic)

Question: a cartoon chinese princess is so cute that you can help dress up beautifully.
Answer:
--> A cartoon Chinese princess is so cute that you can help dress up beautifully.