3 sentences

1. 国旗在旗杆上迎风飘扬。

   guó​qí zài qí​gān shàng yíng​fēng piāo​yáng.

   The national flag is fluttering in the wind on the flagpole.

   Source: Dong Chinese Dictionary

2. 我看到旗杆了。

   wǒ kàn​dào qí​gān le.

   I can see the flagpole.

   Source: OpenSubtitles

3. 广场的正中立着一根高大的旗杆。

   guǎng​chǎng de zhèng​zhōng lì zhe yī gēn gāo​dà de qí​gān.

   A tall flagpole stands right in the center of the square.

   Source: Dong Chinese Dictionary