<｜begin▁of▁sentence｜>### Instruction:
As a Floral Botanist deeply engrossed in the study of flowering plants and their intricate ecosystems, imagine you're exploring a diverse garden filled with various plant species, each representing a unique vertex in a botanical network. Within this garden, you've identified several plants with distinct ages, symbolized by the vertices' ages in our graph: ['A', 'B', 'C', 'D', 'E', 'F'] correspond to [25, 32, 45, 23, 54, 36], respectively.

Now, envision yourself equipped with a specialized tool known as VertexSeq, designed to navigate this botanical network efficiently. Your task is to utilize VertexSeq's methods to accomplish two crucial objectives:

1. **Identify Mature Plants**: You aim to pinpoint the mature plants thriving in this garden, specifically those older than 30 years. How can you employ VertexSeq to filter out these seasoned specimens, ensuring your focus remains on the plants that have reached a significant stage of growth?

2. **Locate a Specific Plant**: Amidst your exploration, you receive word of a particularly rare plant known as 'C.' Your colleagues are eager to learn more about it, and you're tasked with locating it swiftly within the botanical network. How can you leverage VertexSeq's capabilities to swiftly pinpoint and examine the characteristics of this elusive 'C' plant?

With your botanical expertise and the tools at your disposal, you're poised to unravel the mysteries concealed within this verdant tapestry of flora, advancing our understanding of flowering plants and their rich biodiversity.
### Response:
import igraph as ig

# Create a simple graph
g = ig.Graph(edges=[(0, 1), (1, 2), (2, 3), (3, 4), (4, 5)])
g.vs['name'] = ['A', 'B', 'C', 'D', 'E', 'F']
g.vs['age'] = [25, 32, 45, 23, 54, 36]

# Select vertices with age greater than 30
older_vertices = g.vs.select(age_gt=30)

# Print the names of these vertices
print('Older vertices:', older_vertices['name'])

# Find a vertex with the name 'C'
c_vertex = g.vs.find(name_eq='C')
print('Vertex with name C:', c_vertex.index)
<|EOT|>
